Ontario Railway Network User Guide
Contents
1. Column Name Column Type Mandatory Short Name Description The nominal distance between the two outer rails gauge of a railway track Permissible Values e Other Other type value of gauge not defined or listed GAUGE VARCHAR2 10 Yes GAUGE e Narrow Rails are 0 967 metres apart e Standard Rails are 1 435 metres apart e Unknown Value used when it is impossible to determine the gauge of the track NUMTRACKS NUMBER 1 Yes NUMTRACKS The number of tracks represented by the track geometry Indication whether the railway is provided with an electric system to power vehicles moving along it Permissible Values ELECTRIC VARCHAR2 8 Yes ELECTRIC e Absence Railway is not electrified e Presence Railway is powered by electricity e Unknown Value used when it is impossible to determine the railway is electrified The status of the Track feature Permissible Values e Discontinued Track is still present but is no longer in use STATUS VARCHAR2 20 Yes STATUS e Operational Mary is operational o e Seasonal Track is operational for a limited time season e Under Construction Track system is currently being built e Unknown Value used when it is impossible to determine the track s status Maximum allowable operating speed for freight trains as measured in the Unit of SPEEDFREIT NUMBER 3 Yes SBEEDERE T SPOe feld Note A value of 1 will be stored in this field if the speed information is not available or ap2. None No value applies Orthoimage Orthorectified satellite imagery Orthophoto Orthorectified aerial photo Other Other value than those listed Paper Map Conventional source of information like a map or plan Raster Data Data resulting from a scanning process Raw Imagery Satellite imagery not orthorectified Unknown Value used when it is impossible to determine the type of data source or technique used to populate the object Vector Data Digital vector data 21 Column Name Column Type Mandatory Short Name Description GEOACCURA NUMBER 3 Yes GEOACCURA The planimetric accuracy of the represented feature expressed in whole metres as a circular map accuracy standard CMAS The value in this field represents the accuracy difference between the mapped feature against its real world location For example a value of 10 metres for a mapped feature suggests that a person should be able to find the represented real world feature within 10 metres of its mapped coordinates GEOPROVIDE VARCHAR2 25 Yes GEOPROVIDE The affiliation of the organization that generated created or revised the geometry spatial data Permissible Values e Federal Federal department or agency e Municipal Municipal department or agency e Other Other value than those listed e Private Private sector organization or agency e Provincial Territorial Provincial territorial department or agency e
3. The type of junction connection located at the end along or at an interconnection between three or more tracks at grade level Permissible Values Administrative Position of an administrative transition E g Subdivision and or Provincial Territorial boundary when a physical junction type such as a switch diamond or end is not present at the point of transition Diamond Track configuration which allows a train to cross over another track at grade level in order to pursue its path Refer to Figure A18 for an example of a Diamond junction End Connection to a single track leading to a dead end Track terminates Refer to Figure A19 for an example of an End junction Switch A device used to route equipment from one set of tracks to another Refer to Figure A20 for an example of a Switch junction Other Mechanical installation not listed enabling railway trains to be guided from one track to another Unknown Value used when it is impossible to determine the type of track junction For columns shared in all tables refer to NRWN and LIO Common Metadata columns 47 7 Links to Additional Information e Official LIO metadata record for o ORWN Track line segment https www javacoeapp Irc gov on ca geonetwork srv en main home uuid 9 be36af5 4db6 4bcb 9917 c4256f586bf5 o ORWN Structure Line line segment https www javacoeapp Irc gov on ca geonetwork srv en main home uuid 0 0969576 fcf5 41fa aae1 3d10041a0419 o
4. Notes and Caveat e Track Structures mostly culverts are represented as point features in this layer e Features in this layer should not be duplicated in the ORWN Structure Line layer Caveat e At this time the NRWN ORWN inventory of culvert types does not include hydrographic water crossings Culvert structure types in this layer only represent trail and tertiary traffic passages beneath railway lines The ORWN_STRUCTURE_POINT_FT model structure is identical to that of ORWN STRUCTURE LINE FT except that the point version features do not have assigned English or French names ORWN Crossing ORWNCROS The location along the rail network where a track crosses another network It identifies the location and type of crossing that traverses either on above or below a track A crossing includes any structure supporting that part of the track or facilitating the crossing Crossings are often equipped with public warning signs and audio visual signalling safeguards to control and protect vehicular and pedestrian traffic Crossings are stored and represented in the LIO ORWN Crossing layer as point features 25 Figure 5 Right Railway level crossing on Huron St Sault Ste Marie on the Algoma Central Railway line Soo Subdivision Left MNRF Make a Topographic Map location reference Note The distance that the Crossing is located along the Subdivision is often written behind the Crossing s warning sign see photo
5. Subdivision reference 1 SUB1UNITDI VARCHAR2 9 Yes SUB1UNITDI The unit of distance used by a railway company for associated subdivision distance values expressed as Mile Kilometre or Unknown Subdivision reference 2 SUBDI2NID VARCHAR2 32 No SUBDI2NID See description for SUBDI1NID Subdivision reference 2 SUBDI2NAME VARCHAR2 100 No SUBDI2NAME See description for SUBDI1NAME Subdivision reference 2 SUBD2START NUMBER 5 2 No SUBD2END See description for SUBD1START Subdivision reference 2 SUBD2END NUMBER 5 2 No SUBD2END See description for SUBD1END SUB2UNITDI VARCHAR2 9 No SUB2UNITDI Subdivision reference 2 See description for SUB1UNITDI For columns shared in all tables refer to NRWN and LIO Common Metadata columns 36 ORWN_STRUCTURE_LINE_FT Linear line representation of a structure used to support or protect a track Note Features in this layer should not be duplicated in the ORWN Structure Point layer Column Name Column Type Mandatory Short Name Description OGF_ID NUMBER 13 Yes OGF_ID System generated object identifier unique at the application level NID VARCHAR2 32 Yes NID National Identifier NID assigned to every Structure feature in the National Railway Network NRWN geodatabase STRUCID VARCHAR2 32 Yes STRUCID Unique identifier assigned to the structure when it is part of a set of separate adjoining structures grouped to f
6. VARCHAR2 32 VARCHAR2 32 VARCHAR2 100 VARCHAR2 20 VARCHAR2 32 VARCHAR2 100 NUMBER 52 VARCHAR2 9 VARCHAR2 15 VARCHAR2 32 VARCHAR2 100 NUMBER 52 VARCHAR2 9 VARCHAR2 15 VARCHAR2 7 VARCHAR2 5 VARCHAR2 12 VARCHAR2 8 VARCHAR2 8 VARCHAR2 25 NUMBER VARCHAR2 25 VARCHAR2 8 VARCHAR2 8 VARCHAR2 25 VARCHAR2 25 EFFECTIVE DATETIME DATE SYSTEM DATETIME DATE NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NULL NULL NULL NULL NULL NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL SDO_GEOMETRY NULL SHAPE ORWN_JUNCTION FT Gocr_p SDO_GEOMETRY NULL NUMBER 13 NOT NULL NID BNDYTRIND SUBOLIMIND TRAJUNCTYP ADMINAREA SPECVERS SECURCLASS GEOCREDATE GEOREVDATE GEOACQTECH GEOACCURA GEOPROVIDE ATTCREDATE ATTREVDATE ATTACQTEGH ATTPROVIDE VARCHAR2 32 VARCHAR2 5 VARCHAR2 5 VARCHAR2 15 VARCHAR2 7 VARCHAR2 5 VARCHAR2 12 VARCHAR2 8 VARCHAR2 8 VARCHAR2 25 NUMBERE VARCHAR2 25 VARCHAR2 8 VARCHAR2 8 VARCHAR2 25 VARCHAR2 25 EFFECTIVE DATETIME DATE SYSTEM DATETIME DATE SDO GEOMETRY NULL SHAPE NOT NULL ORWN CROSSING FT NID CROSSINGID LEVELCROSS CROSSINTYP WARNINGSYS ROADCLASS CROSSTYPNM ROUTENUMBE CROSACCES TCID TRACKNID TRACKNAME TRACKCLASS SUBDIINID SUBDITNAME SUBDIDIST SUBIUNITDI SUBIDISTY SUBDIZNID SUBDIZNAME SUBD2DIST SUB2UNITDI SUB2DISTY ADMINAREA SPECVERS SECURCLAS
7. 100 VARCHAR2 10 VARCHAR2 100 VARCHAR2 100 VARCHAR2 10 VARCHAR2 32 VARCHAR2 100 NUMBER 52 NUMBER 52 VARCHAR2 9 VARCHAR2 32 VARCHAR2 100 NUMBER 5 2 NUMBER S 2 VARCHAR2 9 VARCHAR2 7 VARCHAR2 5 VARCHAR2 12 VARCHAR2 8 VARCHAR2 VARCHAR2 25 NUMBER 3 VARCHAR2 25 VARCHAR2 8 VARCHAR28 VARCHAR2 25 VARCHAR2 25 EFFECTIVE_DATETIME DATE SYSTEM_DATETIME DATE SHAPE SDO_GEOMETRY NULL ORWN STRUCTURE UNE FT Aocr iD NID STRUCID STRUENNAME STRUFRNAME STRUCTYPE TRACKNID TRACKNAME TRACKCLASS SUBDIHNID SUBDHNAME SUBDIDIST SUBIUNITDI SUBIDISTY SUBDRNID SUBDIZNAME SUBD2DIST SUB2UNIT DI SUB2DISTY ADMINAREA SPECVERS SECURCLASS GEOCREDATE GEOREVDATE GEOACQTECH GEOACCURA GEOPROVIDE ATTCREDATE ATTREVDATE ATTACQTECH ATTPROVIDE SHAPE NUMBER 13 VARCHAR2 32 VARCHAR2 32 VARCHAR2 100 VARCHAR2 100 VARCHAR2 15 VARCHAR2 32 VARCHAR2 100 VARCHAR2 20 VARCHAR2 32 VARCHAR2 100 NUMBER 52 VARCHAR2 9 VARCHAR2 15 VARCHAR2 32 VARCHAR2 100 NUMBER 52 VARCHAR2 9 VARCHAR2 15 VARCHAR 7 VARCHAR2 5 VARCHAR2 12 VARCHAR2 8 VARCHAR2 8 VARCHAR2 25 NUMBER 3 VARCHAR2 25 VARCHAR2 8 VARCHAR2 8 VARCHAR2 Q5 VARCHAR2 25 EFFECTIVE DATETIME DATE SYSTEM_DATETIME DATE NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NULL NULL NULL NULL NULL NULL NOT NULL NOT NULL NO
8. Example of a Yard on the Huron Central Railway in Sault Ste Marie Ontario 50 ORWN_STRUCTURE_LINE_FT STRUCID Structure Line feature set in NRWN ORWN To e g NID a24b7f7a66814d898259acldb81f66d4 A HsTRUCI NID 7dcaaadf4c974fa6a4c7270b7d8beb56 Figure A5 Example of Structure Line feature grouping in NRWN ORWN In the example above the railway bridge is represented as two uniquely numbered features NID in ORWN one on each main track line segment The bridge is assigned a unique Structure ID that is referenced by both features to indicate that they belong to the same structure STRUCTYPE Bridge Figure A6 Top Railway bridge spanning the Mississagi River west of Blind River Cobden Twp Ontario Bottom Same bridge symbolized in the MNRF Make a Topographic Map web application 51 Tunnel Figure A7 Left Aerial view of tunnel near Red Sucker Cove west of the Red Sucker Point Nature Reserve Right Tunnel symbolized in the MNRF Make a Topographic Map web application ORWN_CROSSING_FT CROSSINGID Crossing feature set in NRWN ORWN NID e6e94c56787d4ccc93e45ba18f43d32c NID 6ae6363a8b094605263cc8148a216337 NID bce4453d74154436b280f15974a476a6 NID 9a44cbad92e943ee8521a48fa40e8ae2 Figure A8 Grouping of five separate crossings for the Parkway Trail passing under the rail lines through a large culvert in Thunder Bay Ontario Crossings are represented on each track segment they inter
9. Information cccccceeceececcecceececeeceeceeceeaeeaeceeceeaeeaecaeseeseeaecaeceseeseseseesneseeas FE UTI SUMMAN A E REY n Epi we Epid n eee Key MS E Pe O Abstract 22 ee cec ccc eececcecceccecceceeceeceeceeaecaececeeaeeaecaecueseeaecaececeeaueaecaesueceeaeeaesueseeseeaeeneeneeeeas Table of Contents ce ccc ccceeceeceececceeceeeeceeceeceeaecuececeeaesaeceeceeaesaecaeseeaeeaeeaecueaeeaesaeeneeeens List of FIQU E S aeaaaee aaae aaae aaaea a a aaa a aaa a aaa e aaa A Eaa a aaa E a iaaii LiSt Of ACTONYMS siii eee ee ee ee RE MIG MEM MRC MICs git pi A A Os AA as cease ean eee eae eee ene 3 General Overview of the National Railway Network NRWN ssssesss Diagram Summary of NRWN Business Rules eee pe ee aerae erae ae kaat aerae aniatra Eana r ESFE Note to Ontario Railway Network ORWN Users ee About Railway SubdivisiOnis uec euu esee ease ene penna sassseecctassanasosecarsdaaaseas Information about a Subdivision in NRWN includes eseseseeeeeeeeeesss Track Segmentation Rules C Track and Subdivision References by Other ORWN Layer Features ORWN and LIO Common Metadata p ob ae ensayo ens Data Classes OI UV NS E O oa ORWN Track ORWNTRK snisiorrasicaai iii RARAS ORWN Structure Line ORWNSTLN ooooocccccccccccnccocononcnccccconononnnnnnnnccnnnnnnnnnnnnnnnnnncnnos ORWN Structu
10. ORWN Structure Point point feature https www javacoeapp Irc gov on ca geonetwork srv en main home uuid f4 a 92fd ae2d 45c9 adf0 cb146e2393cd o ORWN Crossing point feature https www javacoeapp Irc gov on ca geonetwork srv en main home uuid 2 d7691ec 756c 498c b09a 13efb536a65f o ORWN Station point feature https www javacoeapp Irc gov on ca geonetwork srv en main home uuid 1 0026ca0 1e1a 4ce7 86d7 215aefe38bc1 o ORWN Junction point feature https www javacoeapp Irc gov on ca geonetwork srv en main home uuid b 501 1aa3 e762 4b8f 9c2c ed0ef5077a7e o ORWN Marker Post point feature https www javacoeapp Irc gov on ca geonetwork srv en main home uuid 6 114167f ba00 446e bd5e 49b0cb2581b7 e MNRF Make a Topographic Map application http www giscoeapp lIrc gov on ca web mnr gib basedata viewer viewer html e GeoGratis NRWN Information for Ontario http geogratis gc ca api en nrcan rncan ess sst 4699038e d825 475a be89 b1132ab0444c html 48 APPENDIX A ORWN Feature Examples ORWN_TRACK_FT TRACKCLASS Crossover nh Figure A1 Example of a Crossover in the Greater Toronto Area near Noble Street Spur Figure A2 Example of a Spur off the Huron Central Railway on Trunk Road in Sault Ste Marie Ontario This spur is used to offload fuel at a tank farm 49 Figure A3 Example of a Wye on the Huron Central Railway in Sault Ste Marie Ontario Figure A4
11. Point dus Route Number Structure Point NID Road Accessibility Boundary Transition Ind Structure ID group Subdivision Limit Ind Structure Type Trensport Canada IO Track Junction Type Junction NID Diagram Notes 1 A unique National Identifier NID is assigned to every Track Track Segment Subdivision Crossing Marker Post Structure Line and Point Station and Junction layer feature Common metadata about the feature is captured for all NRWN layers mentioned in 1 TRACK is the basic highest level starting point of the NRWN Each TRACK feature has up to two Subdivision references A TRACK is made up of 1 or more Track Segments that share the same characteristics Each Track Segment has 1 Owner and 1 main Operator Each Track Segment may have up to 4 Users NRWN Crossing Marker Post Structure Line Point and Station layers reference a TRACK and Subdivisions that the feature is associated with These attribute values are associated via the Track NID 9 Each feature also has a documented distance within a referenced Track Subdivision that it is located within with A distance can be documented for both referenced Subdivisions 10 Railway Structures are represented as either a linear line or point feature 11 Structure and Crossing features from the same layer can form an amalgamated grouped feature that is assigned a unique National Identifier NID identified with an asterisk in the diagram 12 A Station ca
12. SUB1DISTY VARCHAR2 15 No SUB1UNITDI Subdivision reference 1 A qualifier about the value stored in the Subdivision 1 Distance field It describes the type of distance associated to a track feature Permissible Values e Calculated Distance value was a calculated length from a given point of reference e Interpolated Distance value was interpolated between two distances posted on track events e None No value applies e Posted Distance value is posted at the track event location in the real world e Unknown Value used when it is impossible to determine the distance associated to the track event SUBDI2NID VARCHAR2 32 No SUBDI2NID Subdivision reference 2 See description for SUBDI1NID SUBDI2NAME VARCHAR2 100 No SUBDI2NAME Subdivision reference 2 See description for SUBDI1NAME SUBD2DIST NUMBER 5 2 No SUBD2DIST Subdivision reference 2 See description for SUBD1DIST SUB2UNITDI VARCHAR2 9 No SUB2UNITDI Subdivision reference 2 See description for SUB1UNITDI SUB2DISTY VARCHAR2 15 No SUB2UNITDI Subdivision reference 2 See description for SUB1DISTY ORWN and LIO Common Metadata The following NRWN ORWN and LIO metadata are common to all ORWN data class features Column Name Column Type Mandatory Short Name Description The Administrative Area covered by this dataset Limited to the extents of ADM
13. Signal Highway Traffic Signals activated by railway equipment employee Walk Don t Walk Signals indicating whether it is safe or not safe for pedestrians to use the crossing Unknown Value used when it is impossible to determine the type of warning installation at the crossing ROADCLASS VARCHAR2 20 Yes ROADCLASS The functional classification of the road feature that crosses the track in relation to the road network it belongs to 40 Column Name Column Type Mandatory Short Name Description Permissible Values Alleyway Lane A high speed thoroughfare dedicated to provide access to the rear of properties Arterial A major thoroughfare with medium to large traffic capacity Collector A minor thoroughfare mainly used to access properties and to feed traffic with right of way Expressway Highway A high speed thoroughfare with a combination of controlled access intersections at any grade Farm A stretch of road that is located in a farm field Freeway An unimpeded high speed controlled access thoroughfare for through traffic with typically no at grade intersections usually with no property access or direct access and which is accessed by a ramp Pedestrians are prohibited Local Strata A low speed thoroughfare dedicated to provide access to properties with potential public restriction such as trailer parks First Nations strata private estates seasonal resid
14. Unknown Value used when it is impossible to determine the feature s provider ATTCREDATE VARCHAR2 8 Yes ATTCREDATE The character date that the attribute data was created Format YYYYMMDD Note If the month or day is not known the corresponding characters are left blank ATTREVDATE VARCHAR2 8 No ATTREVDATE The character date that the attribute data was revised Format YYYYMMDD Note If the month or day is not known the corresponding characters are left blank ATTACQTECH VARCHAR2 25 Yes ATTACQTECH The type of data source or technique used to populate create or revise the attribute data Permissible Values Same as GEOACQTECH 22 Column Name Column Type Mandatory Short Name Description The affiliation of the organization that generated created or revised the ATTPROVIDE VARCHAR2 25 Yes ATTPROVIDE attribute data Permissible Values Same as GEOPROVIDE EFFECTIVE DATETIME DATE Ves EFF DATE LIO Attribute Date time the record was created or last modified in the source database LIO Attribute Date time the record was loaded into or last modified in the SYSTEM_DATETIME DATE Yes SYS_DATE LIO database DEFAULT SYSDATE SHAPE SDO_GEOMETRY No SHAPE LIO Geometry attribute 23 4 Data Classes ORWN ORWN Track ORWNTRK A Track provides a guide for the movement of trains and other equipment In general one linear fe
15. bottom right and on nearby automated warning signal control boxes photo bottom left Emergency contact telephone numbers are also prominently displayed on signal control boxes as seen in the photo below Figure 6 Left Signal control box showing su contact telephone numbers Right Subdivision mile reference written on the back of a bdivision mile reference and emergency crossing sign 26 ORWN Station ORWNSTN Location identified by a station name sign and designated by that name in a time table schedule listing the time at which certain events such as arrivals and departures at a station are expected to take place Figure 7 Algoma Central Railway passenger station in Sault Ste Marie Ontario Note A station or stop does not necessarily have to be a building Refer to the Federal Geographic Data Committee s Geographic Information Framework Data Content Standard Part 7b Transportation Rail for further information Stations are represented in the ORWN Station layer as point features ORWN Marker Post ORWNMKPO Sign indicating the distance along the network For example signs are often posted at intervals along a railway Subdivision indicating the distance from its point of origin in miles or kilometres Marker posts are represented as point features in this layer Figure 8 Marker post found along the Huron Central Railway in Algoma Mills Ontario 27 Railway marker posts can be found affi
16. either not applicable or not available The reporting mark associated to the Operator or Carrier as assigned by a national or sub national agency The reporting mark usually represents the company acronym For OPERATORMK VARCHAR2 10 Yes OPERATORMK example the reporting mark for Canadian National is CN Note A value of None will be stored in this field when information is either not applicable or not available Location where the operator portion of the Subdivision starts expressed as a distance ORRUBSTART BERE i OPSUBSTART The unit of measure is identified in the Operator Unit of Distance field Location where the operator portion of the Subdivision ends expressed as a distance PRSUBEND NUMBER 2 MOS OPSUBEND The unit of measure is identified in the Operator Unit of Distance field Unit of distance used by the operator for their operating start and end distances OPSUBADIS VARAS lis prs expressed as Mile Kilometre or Unknown OWNERENA VARCHAR2 100 Yes OWNERENA The English name of the company that owns railway equipment and or facilities OWNERFNA VARCHAR2 100 Yes OWNERFNA The French name of the company that owns railway equipment and or facilities 34 Column Name Column Type Mandatory Short Name Description Track User reference 1 The English Name of the company that uses railway equipment and or facilities A track TRKUSR1ENA VARCHAR2 100 No TRKUSR1ENA_ may hav
17. junction symbolized in the MNRF Make a Topographic Map web AD DIICATION sa cescensdeseceseceaececleeoneeskcent TET 58 Figure A20 Right Example of a switch junction type on the Huron Central Railway in Blind River Ontario Left Switch symbolized in the MNRF Make a Topographic Map web application List of Acronyms LIO Land Information Ontario LIOW Land Information Ontario data Warehouse LUT Lookup Table MNRF Ontario Ministry of Natural Resources and Forestry NRWN National Railway Network OGF Ontario Geospatial Feature ORWN Ontario Railway Network derivative of NRWN SDI Spatial Data Infrastructure WMS Web Mapping Service 1 Introduction In 2009 the Ontario Ministry of Natural Resources and Forestry MNRF along with other Canadian Provincial counterparts were invited to participate in a Natural Resources Canada NRCAN initiative to define the National Railway Network NRWN to be stored and maintained in GeoGratis The project s goal was to define a national standard for railway network spatial and attribute information The NRWN project involved extensive consultation with information owners of railway geospatial datasets from both Private and Public sectors At the same time the MNRF s Spatial Data Infrastructure SDI program re examined the business needs for their own LIO railway themed information As crucial internal business requirements were reflected in the proposed NRWN data standards SDI launch
18. made up of 4 segments a segment is created every time there is a difference in one or more Track attribute values between adjacent segments 16 Track and Subdivision References by Other ORWN Layer Features ORWN layer features Marker Post Structure Line Structure Point Crossing and Station reference the parent Track and Subdivision with which they are associated These associations are made through the Track NID though no hard interlayer relationships have been implemented in either NRWN or ORWN models The following Track and Subdivision information is carried across for all ORWN features with the exception of ORWN Junctions Column Name Column Type Mandatory Short Name Description TRACKNID VARCHAR2 32 Yes TRACKNID National Identifier NID assigned to every Track feature in the National Railway Network NRWN geodatabase Each Track feature is defined by a junction at both ends and is made up of one or more uniquely identified Track segments See Track Segment ID description TRACKNAME VARCHAR2 100 Yes TRACKNAME Name associated to the track by a national or sub national agency Note A value of None will be stored in this field when information is either not applicable or not available TRACKCLASS VARCHAR2 20 Yes TRACKCLASS Functional classification based on the importance of the role that the track performs in the connectivity of the rail n
19. the number written on the sign are stored in SUBD1DIST and SUBD2DIST columns which are qualified by SUB1UNITDI SUB1DISTY and SUB2UNITDI SUB2DISTY columns For columns shared in all tables refer to NRWN and LIO Common Metadata columns 45 ORWN_JUNCTION_FT Virtual connector point feature of the National Railway Network NRWN A Junction may be located at the intersection of three or more sets of tracks at the track end at the transition of a national provincial or territorial boundary and at the beginning and end of a track subdivision Column Name Column Type Mandatory Short Name Description Ontario Geographic Feature OGF Id System generated object identifier unique at the OGF_ID NUMBER 13 Yes OGF_ID application level National Identifier NID assigned to every Junction feature in the National Railway MID Manes j YSS NID Network NRWN geodatabase Boundary Transition Indicator A true or false indicator if the junction is a point of transition at a National Provincial or Territorial border BNDYTRIND VARCHAR2 5 Yes BNDYTRIND Permissible Values e True e False Subdivision Limit Indicator A true or false indicator if the junction is a point of transition between track subdivisions SUBDLIMIND VARCHAR2 5 Yes SUBDLIMIND Permissible Values e True e False 46 Column Name Column Type Mandatory Short Name Description TRAJUNCTYP VARCHAR2 15 Yes TRAJUNCTYP
20. type of feature that intersects with the crossing Permissible Values Electrical Power Line Live line used to transmit electricity Hydrographic Hydrographic feature such as a river stream lake wetland etc Note this crossing type is mostly represented for bridges ORWN Structure Line Pipeline water sewage oil or natural gas pipeline Road Any public or private way or course available for vehicle or pedestrian use Other Another type of crossing not listed Track Grade separated track that crosses another track Trail Trail for motorized or non motorized recreational vehicles or pedestrians WARNINGSYS VARCHAR2 20 Yes WARNINGSYS Type of warning signal installation at the crossing Permissible Values Closed Gate Gate that is closed when crossing is not in use FLB Flashing Lights and Bell activated by railway equipment employee Refer to Figure A12 for an example of a FLB Other Other type of traffic control device than those listed None No signage or traffic control device present at the crossing FLBG Flashing Lights Bell and Gate Arms activated by railway equipment employee Refer to Figure A13 for an example of a FLBG SRCS Standard Reflectorized Railway Crossing Sign Refer to Figure A14 for an example of a SRCS STOP Stop Sign Refer to Figure A15 for an example of a stop SRCS and STOP Railway Crossing Sign and Stop Sign Refer to Figure A16 for an example of a SRCS and Stop Traffic
21. 2 100 VARCHAR2 10 VARCHAR2 100 VARCHAR2 100 VARCHAR2 10 VARCHAR2 100 VARCHAR2 100 VARCHAR2 10 VARCHAR2 100 VARCHAR2 100 VARCHAR2 10 VARCHAR2 32 VARCHAR2 100 VARCHAR2 20 VARCHAR2 32 VARCHAR2 100 NUMBER 52 VARCHAR2 9 VARCHAR2 15 VARCHAR2 32 VARCHAR2 100 NUMBER 2 VARCHAR2 9 VARCHAR2 15 VARCHAR2 7 VARCHAR2 5 VARCHAR2 12 VARCHAR2 8 VARCHAR2 8 VARCHAR2 25 NUMBERE VARCHAR2 25 VARCHAR2 8 VARCHAR2 8 VARCHAR2 25 VARCHAR2 25 EFFECTIVE_DATETIME DATE SYSTEM_DATETIME DATE SDO_GEOMETRY NULL SHAPE NOT NULL 29 6 Data Description This section describes the extent of data collected for ORWN data classes ORWN_TRACK_FT In the real world a track provides a guide for the movement of trains and other equipment In general one linear feature represents the two rails of a track A track is bounded by two junction points and is segmented at each change in attributes along its course This layer is part of the Ontario Railway Network ORWN suite of Data Classes that have been adapted from Natural Resources Canada GeoGratis National Railway Network NRWN standards Column Name Column Type Mandatory Short Name Description Ontario Geographic Feature OGF Id System generated object identifier unique at the OGF_ID NUMBER 13 Yes OGF_ID application level National Identifier NID assigned to every Track feature in the National Railway Network NRWN geodatabase
22. INABREA VeRO Yes ADMINAREA the Province of Ontario for the Ontario Railway Network ORWN data SPECVERS VARCHAR2 5 Yes SPECVERS Version number of the GeoGratis standards used to create this dataset The security classification of the dataset as determined by Natural Resources Canada for the National Railway Network NRWN information EN WARCHOBZ IZ ves SEVURGLA S All data for the NRWN derived Ontario Railway Network ORWN are deemed to be Unclassified The character date that the spatial data was created Format GEOCREDATE VARCHAR2 8 _ Yes GEOGREDATE CYMMDD Note If the month or day is not known the corresponding characters are left blank The character date that the spatial data was revised Format GEOREVDATE VARCHAR2 8 No GEOREVBATE CONDO Note If the month or day is not known the corresponding characters are left blank 20 Column Name Column Type Mandatory Short Name Description The type of data source or technique used to populate create or revise the geometry spatial data Permissible Values e Aerial Photo Aerial photography not orthorectified e Computed Geometric information that has been computed not captured e Digital Elevation Model Data coming from a Digital Elevation Model DEM e Field Completion Information gathered from people directly in the field e GPS Data collected using a Global Positioning System GPS GEOACQTECH VARCHAR2 25 Yes GEOACQTECH deca
23. S GEOCREDATE GEOREVDATE GEOACQTECH GEOACCURA GEOPROVIDE ATTCREDATE ATTREVDATE ATTACQTECH ATTPROVIDE SHAPE NUMBER 13 VARCHAR2 32 VARCHAR2 32 VARCHAR2 15 VARCHAR2 25 VARCHAR2 20 VARCHAR2 20 VARCHAR2 100 VARCHAR2 10 VARCHAR2 7 NUMBER 9 VARCHAR2 32 VARCHAR2 100 VARCHAR2 20 VARCHAR2 32 VARCHAR2 100 NUMBER 52 VARCHAR2 9 VARCHAR2 15 VARCHAR2 32 VARCHAR2 100 NUMBER 52 VARCHAR2 9 VARCHAR2 15 VARCHAR2 7 VARCHAR2 5 VARCHAR2 12 VARCHAR2f8 VARCHAR2 8 VARCHAR2 25 NUMBER 3 VARCHAR2 25 VARCHAR2 8 VARCHAR2 8 VARCHAR2 25 VARCHAR2 25 EFFECTIVE DATETIME DATE SYSTEM DATETIME DATE NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NOT NULL NULL NOT NULL SDO GEOMETRY NULL ORWN STATION FT NID STENNAME STFRNAME STNTYPE NUMPLATEFR STNUSRIENA STNUSRIFNA STNUSRIRMK STNUSR2ENA STNUSR2FNA STNUSR2RMK STNUSRSENA STNUSRIFNA STNUSRIRMK STNUSRAENA STNUSRAFNA STNUSRARMK TRACKND TRACKNAME TRACKCLASS SUBDHNID SUBDHNAME SUBDIDIST SUBIUNITDI SUBIDISTY SUBDIZNID SUBDIZNAME SUBD2DIST SUB2UNIT DI SUB DISTY ADMINAREA SPECVERS SECURCLASS GEOCREDATE GEOREVDATE GEOACQTECH GEOACCURA GEOPROVIDE ATTCREDATE ATTREVDATE ATTACQTEGH ATTPROVIDE NUMBER 13 VARCHAR2 32 VARCHAR2 100 VARCHAR2 100 VARCHAR2 20 NUMBER VARCHAR2 100 VARCHAR
24. T NULL NOT NULL NULL NOT NULL NOT NULL NOT NULL NOT NULL NULL NOT NULL NOT NULL NOT NULL NOT NULL SDO_GEOMETRY NULL ORWN STRUCTURE POINT FT Soar NUMBER I3 NOT NULL NID VARCHAR2 32 NOT NULL STRUCIO VARCHAR2 32 NOT NULL STRUCTYPE VARCHAR2 15 NOT NULL TRACKNID VARCHAR2 32 NOT NULL TRACKNAME VARCHAR2 100 NOT NULL TRACKCLASS VARCHAR2 20 NOT NULL SUBDINID VARCHAR2 32 NOT NULL SUBDIINAME VARCHAR2 100 NOT NULL SUBDIDIST NUMBER 52 NOT NULL SUBIUNITDI VARCHAR2 9 NOT NULL SUBIDISTY VARCHAR2 15 NULL SUBDENID VARCHAR2 32 NULL SUBDDNAME VARCHAR2 100 NULL SUBD2DIST NUMBER S2 NULL SUB2UNITDI VARCHAR2 9 NULL SUB2DISTY VARCHAR2 15 NULL ADMINAREA VARCHAR2 7 NOT NULL SPECVERS VARCHAR2 5 NOT NULL SECURCLASS VARCHAR2 12 NOT NULL GEOCREDATE VARCHAR2 8 NOT NULL GEOREVDATE VARCHAR2 8 NULL GEOACQTECH VARCHAR2 25 NOT NULL GEOACCURA NUMBER 3 NOT NULL GEOPROVIDE VARCHAR2 25 NOT NULL ATTCREDATE VARCHAR2 8 NOT NULL ATTREVDATE VARCHAR2 NULL ATTACQTECH VARCHAR2 25 NOT NULL ATTPROVIDE VARCHAR2 25 NOT NULL EFFECTIVE_DATETIME DATE NOT NULL SYSTEM DATETIME DATE NOT NULL ocr D NID TRACKND TRACKNAME TRACKCLASS SUBDIINID SUBDITNAME SUBDTDIST SUBIUNITDI SUBIDISTY SUBDI2NID SUBDIZNAME SUBD2DIST SUBQUNTTDI SUB2DISTY ADMINAREA SPECVERS SECURCLASS GEOCREDATE GEOREVDATE GEOACQTECH GEOACCURA GEOPROVIDE ATTCREDATE ATTREVDATE ATTACQTECH ATTPROVIDE SHAPE ORWN MARKER POST FT NUMBER 13
25. TION TT ceste ease teet tes eo rennen eth Cerne Ene tht rese ret eher eoe Een 57 TRAJU NO TRY dim DEEP 57 List of Figures Figure 1 Diagram demonstrating inter relationship of NRWN ORWN layer features 11 Figure 2 Extent of the Webbwood Subdivision of the Huron Central Railway in Northern Ontario Figure 3 Example of a Track as defined by National Railway Network GeoGratis standards 15 Figure 4 Example of a Track made up of 4 segments a segment is created every time there is a difference in one or more Track attribute values between adjacent segments 16 Figure 5 Right Railway level crossing on Huron St Sault Ste Marie on the Algoma Central Railway line Soo Subdivision Left MNRF Make a Topographic Map location reference 26 Figure 6 Left Signal control box showing subdivision mile reference and emergency contact telephone numbers Right Subdivision mile reference written on the back of a crossing sign 26 Figure 7 Algoma Central Railway passenger station in Sault Ste Marie Ontario 27 Figure 8 Marker post found along the Huron Central Railway in Algoma Mills Ontario 27 Figure A1 Example of a Crossover in the Greater Toronto Area near Noble Street 49 Figure A2 Example of a Spur off the Huron Central Railway on Trunk Road in Sault Ste Marie Ontario This spur is used to offload fuel at a tank farM oooc
26. TISAGSNIO VARGHAR UE veg TRACKID Each Track feature is defined by a junction at both ends and is made up of one or more uniquely identified Track segments See Track Segment ID description A unique National Identifier NID assigned to every Track segment with uniform characteristics TRACHSEGID VANUS USE ues ARA IO Note Each Track segment will be assigned a unique identifier and a group of Track segments may reference the same Track NID See TRACKNID description Name associated to the track by a national or sub national agency TRACKNAME VARCHAR2 100 Yes TRACKNAME Note A value of None will be stored in this field when information is either not applicable or not available 30 Column Name Column Type Mandatory Short Name Description Functional classification based on the importance of the role that the track performs in the connectivity of the rail network Permissible Values e Connecting Track which branches off a Subdivision that establishes a connection to another Subdivision e Crossover Short connecting track between two or more other tracks Refer to Figure A1 for an example of a Crossover e Ferry Route Average route a ferry boat takes over a waterbody when transporting trains between two fixed locations on the rail network e Main Main track of the network TRACKCLASS VARCHAR2 20 Ges TRACKCLASS e Siding Track of lower rank that comes off the main track It is double ended to rejoin th
27. ature represents the two rails of a track A track is bounded by two junction points and is segmented at each change in attributes along its course Note A Track e Has one 1 Owner and one 1 main Operator e g Canadian National e Has up to four 0 4 Users e g VIA e Belongs to up to two 1 2 associated administrative Subdivisions ORWN Track segments are represented as linear line features in this layer ORWN Track is the core building block of the ORWN Other track related features such as Stations structures and marker posts are linked to ORWN through the unique TRACKNID ORWN_TRACK_FT In the real world a track provides a guide for the movement of trains and other equipment In general one linear feature represents the two rails of a track A track is bounded by two junction points and is segmented at each change in attributes along its course This layer is part of the Ontario Railway Network ORWN suite of Data Classes that have been adapted from Natural Resources Canada GeoGratis National Railway Network NRWN standards ORWN Structure Line ORWNSTLN A Linear line representation of a structure built to support or protect a track Note e Track Structures are represented as a linear line feature in this layer e Features in this layer should not be duplicated in the ORWN Structure Point layer 24 ORWN Structure Point ORWNSTPT Point representation of a structure built to support or protect a track
28. cccccncnncnnncconcconcnnonncnnnononnnnnnnnanenonos 49 Figure A3 Example of a Wye on the Huron Central Railway in Sault Ste Marie Ontario 50 Figure A4 Example of a Yard on the Huron Central Railway in Sault Ste Marie Ontario 50 Figure A5 Example of Structure Line feature grouping in NRWN ORWN eene 51 Figure A6 Top Railway bridge spanning the Mississagi River west of Blind River Cobden Twp Ontario Bottom Same bridge symbolized in the MNRF Make a Topographic Map web aPplICA MN sica 51 Figure A7 Left Aerial view of tunnel near Red Sucker Cove west of the Red Sucker Point Nature Reserve Right Tunnel symbolized in the MNRF Make a Topographic Map web APIO MN TREE 52 Figure A8 Grouping of five separate crossings for the Parkway Trail passing under the rail lines through a large culvert in Thunder Bay Ontario 22 cccccccccecceeeeteeeeeeeeeneeeeeeeeeeeeeeeeeeeeeteeeeeeeenees 52 Figure A9 At Grade or level crossing at the intersection of 5th Line road and Algoma Central Railway in Sault Ste Marie Ontario ccccoononnnncccncccccnocccnnonnnnnnncnononononnnnnnnnnnnnnnnnnnnnnnnnnnnnennnos 53 Figure A10 The Algoma Central Railway line crossing over Hwy 17 north of Sault Ste Marie A eode tene Pese cheb ener cherie cane Ease bebe bine te EE Eee Pe Peor ob eee ane tenes eter eset le EE Ehe EE ee ER 53 Figure A11 Huron Central Railway crossing UNDER the Hwy 17 overpass eas
29. e Number values such as 17b e A value of None will be stored in this field when information is either not applicable or not available CROSACCES VARCHAR2 7 Yes CROSACCES The accessibility of the road or trail at the crossing Permissible Values e Private Access by road or trail at the crossing is not public Refer to Figure A17 for an example of Private access e Public Unrestricted access at the crossing by a road or trail that is opened or maintained by a road authority e Unknown Value used when it is impossible to determine the type of accessibility of the road or trail at the crossing TCID NUMBER 9 Yes TCID Unique number assigned to the crossing by Transport Canada Note A value of 1 will be stored in this field if information is not available or applicable For shared track and subdivision information refer to Track and Subdivision Reference columns For columns shared in all tables refer to NRWN and LIO Common Metadata columns 42 ORWN_STATION_FT Location identified by a Station name sign and designated by that name in a time table schedule listing the time at which certain events such as arrivals and departures ata Station are expected to take place Note A station or stop does not necessarily have to be a building Rule A station serves from one 1 up to four 4 Users railway carrier companies Column Name Column Type Mandat
30. e main track e Spur Track of lower rank that comes off the main track It is single ended and does not rejoin the main track Refer to Figure A2 for an example of a Spur e Unknown Value used when it is impossible to determine the track classification e Wye Track arranged in the form of the letter Y This track formation is often used by trains to reverse the locomotive s direction Refer to Figure A3 for an example of a Wye e Yard Complex series of railway tracks for storing sorting or loading unloading rolling stock and or locomotives Railway yards have many tracks in parallel for keeping rolling stock stored off of the main line so that they do not obstruct the flow of rail traffic Refer to Figure A4 for an example of a Yard Level of authority that issued the certificate of fitness to the Track Operator Permissible Values e Federal Federal government REGULATOR VARCHAR2 10 Yes REGULATOR e Municipal Municipal government Other Other value than those listed Provincial Provincial Government Unknown Value used when it is impossible to determine the regulator type 31 Column Name Column Type Mandatory Short Name Description TRANSPTYPE VARCHAR2 10 Yes TRANSPTYPE The type of railway transport used on the track Permissible Values e Monorail Railway transport based on a single rail track which acts as its only support and guideway e Train Railway transport u
31. e up to four users Note A value of None will be stored in this field when information is either not applicable or not available Track User reference 1 The French Name of the company that uses railway equipment and or facilities A track TRKUSR1FNA VARCHAR2 100 No TRKUSR1FNA_ may have up to four users Note A value of Aucun None will be stored in this field when information is either not applicable or not available Track User reference 1 The reporting mark associated to the User as assigned by a national or sub national TRKUSR1RMK VARCHAR2 10 No TRKUSRIRMK agency The reporting mark usually represents the company acronym For example the reporting mark for Canadian National is CN Note A value of None will be stored in this field when information is either not applicable or not available TRKUSR2ENA VARCHAR2 100 No TRKUSR2ENA Track User reference 2 See description for TRKUSR1ENA TRKUSR2FNA VARCHAR2 100 No TRKUSR2FNA Track User reference 2 See description for TRKUSR1FNA TRKUSR2RMK VARCHAR2 10 No TRKUSR2RMK Track User reference 2 See description for TRKUSR1RMK TRKUSR3ENA VARCHAR2 100 No TRKUSR3ENA _ Track User reference 3 See description for TRKUSR1ENA TRKUSR3FNA VARCHAR2 100 No TRKUSR3FNA Track User reference 3 See description for TRKUSR1FNA TRKUSR3RMK VARCHAR2 10 No TRKUSR3RMK Track User reference 3 See description for TRKUSR1RMK TRKUSR4ENA VARCHAR2 100 No TRKUSR4ENA Track User reference 4 See d
32. ed a project to adapt these into LIO Warehouse Database versions of the NRWN geospatial layers As a result of this exercise seven Ontario Railway Network ORWN LIO data classes were implemented to reflect active railway information ORWN Track line segment ORWN Structure Line line segment ORWN Structure Point point feature ORWN Crossing point feature ORWN Station point feature ORWN Marker Post point feature ORWN Junction point feature Dm unum It should be noted that NRWN is not comprehensive and it is expected that as NRWN geospatial layers are revised by NRCAN the ORWN will be updated shortly thereafter _ STRUCTURE SS STATION a GIO SNC snnm gt eo MARKER TRACK JUNCTION POST Figure 1 Diagram demonstrating inter relationship of NRWN ORWN layer features 2 Objectives This user guide is intended for the users of the ORWN collection of data classes The remainder of this document describes the extent and context of the information collected for these data classes Additional information about GeoGratis datasets can be found on the Federal Government GeoGratis website Note The examples in this guide are provided for context only and may not reflect the actual information collected for the features Any errors belong to the authors 3 General Overview of the National Railway Network NRWN Diagram Summary of NRWN Business Rules National Identifier NID Uniquely a
33. ences Local Street A low speed thoroughfare dedicated to provide full access to the front of properties Local Unknown A low speed thoroughfare dedicated to provide access to the front of properties but for which the access regulations are unknown None No value applies Ramp A system of interconnecting roadways providing for the controlled movement between two or more roadways Rapid Transit A thoroughfare restricted to public transit buses Resource Recreation A narrow passage whose primary function is to provide access for resource extraction and may also have served in providing public access to the backcountry Service Lane A stretch of road permitting vehicles to come to a stop along a freeway or highway Scale service lane emergency lane lookout and rest area Unknown Value used when it is impossible to determine the road classification Winter A road that is only useable during the winter when conditions allow for passage over lakes rivers and wetlands 41 Column Name Column Type Mandatory Short Name Description CROSSTYPNM VARCHAR2 100 Yes CROSSTYPNM The name of the feature that crosses the track Note A value of None will be stored in this field when information is either not applicable or not available ROUTENUMBE VARCHAR2 10 Yes ROUTENUMBE Number assigned to the route crossing the track Notes e Defined as a character field to accommodate alphanumeric Rout
34. escription for STNUSR1ENA STNUSR3FNA VARCHAR2 100 No STNUSR3FNA Track User reference 3 See description for STNUSR1FNA STNUSR3RMK VARCHAR2 10 No STNUSR3RMK Track User reference 3 See description for STNUSR1RMK STNUSR4ENA VARCHAR2 100 No STNUSR4ENA Track User reference 4 See description for STNUSR1ENA STNUSR4FNA VARCHAR2 100 No STNUSR4FNA Track User reference 4 See description for STNUSR1FNA STNUSR4RMK VARCHAR2 10 No STNUSR4RMK Track User reference 4 See description for STNUSR1RMK For shared track and subdivision information refer to Track and Subdivision Reference columns For columns shared in all tables refer to NRWN and LIO Common Metadata columns ORWN_MARKER_POST_FT Sign indicating the distance along the network For example signs are often posted at intervals along a railway Subdivision indicating the distance from its point of origin in miles or kilometres Column Name Column Type Mandatory Short Name Description OGF_ID NUMBER 13 yes OGF ID Ontario Geographic Feature OGF Id System generated object identifier unique at the application level National Identifier NID assigned to every Marker Post feature in the National Railway x o MS MD Network NRWN geodatabase For shared track and subdivision information refer to Track and Subdivision Reference columns Note Marker post values
35. escription for TRKUSR1ENA TRKUSR4FNA VARCHAR2 100 No TRKUSR4FNA Track User reference 4 See description for TRKUSR1FNA TRKUSR4RMK VARCHAR2 10 No TRKUSR4RMK Track User reference 4 See description for TRKUSR1RMK 35 Column Name Column Type Mandatory Short Name Description Subdivision reference 1 National Identifier NID assigned to the subdivision A subdivision is an administrative unit of a national or regional network of tracks used to SUBDI1NID VARCHAR2 32 Yes SUBDI1NID transport freight and or passengers A Subdivision is identified by a name or a number and or a colour and is delimited by a junction point at each extremity Note A value of None will be stored in this field when information is either not applicable or not available Subdivision reference 1 Name number or colour associated to the subdivision SUBDHNAME a di Yes SUBDITNAME Note A value of None will be stored in this field when information is either not applicable or not available Subdivision reference 1 Location where the subdivision starts expressed as a distance SUDD Toran POMBE ves UEP inet Note A value of 1 will be stored in this field if distance information is not available or applicable Subdivision reference 1 Location where the subdivision ends expressed as a distance SUBDIEND NUMBER Yes RENA Note A value of 1 will be stored in this field if distance information is not available or applicable
36. etwork Permissible Values See ORWN Track Data Description Column Name Column Type Mandatory Short Name Description Subdivision reference 1 National Identifier NID assigned to the subdivision A subdivision is an administrative unit of a national or regional network of SUBDMNID VARCHAR2 32 Ves SUBDI1NID tracks used to transport freight and or passengers A Subdivision is identified by a name or a number and or a colour and is delimited by a junction point at each extremity Note A value of None will be stored in this field when information is either not applicable or not available Subdivision reference 1 Name number or colour associated to the subdivision MOM MASSA Pies SAP DENNAME Note A value of None will be stored in this field when information is either not applicable or not available Subdivision reference 1 Distance at which the ORWN feature is positioned along the subdivision SUBD1DIST NUMBER 5 2 Vas SUBD1DIST Hs unit of measurement is identified in the associated Unit of Distance field or the Subdivision Note A value of 1 will be stored in this field if distance information is not available or applicable Subdivision reference 1 SUB1UNITDI VARCHAR2 9 Yes SUB1UNITDI The unit of distance used by a railway company for associated subdivision distance values expressed as Mile Kilometre or Unknown Column Name Column Type Mandatory Short Name Description
37. ian traffic Column Name Column Type Mandatory Short Name Description OGF_ID NUMBER 13 Vee OGF ID Ontario Geographic Feature OGF Id System generated object identifier unique at the application level National Identifier NID assigned to every Crossing feature in the National Railwa MID MARUI SEUSS us ME Network NRWN eda i Unique National Identifier NID assigned to the crossing when it is part of a set of neighbouring points forming an amalgamated crossing CROSSINGID VARCHAR2 32 Yes CROSSINGID Note A value of None will be stored in this field when information is either not applicable or not available Refer to Figure A8 for an example of a grouped crossing Level of Crossing Indicates the grade level of the crossing Permissible Values e At Grade The Crossing is at the same grade as the Track Refer to Figure A9 for an example of an At Grade crossing e Over Track passes OVER the infrastructure Refer to Figure A10 for an example LEVELCROSS VARCHAR2 15 Yes LEVELCROSS of an Over crossing e Under Track passes UNDER the infrastructure Refer to Figure A11 for an example of an Under crossing e Combination Track passes UNDER the infrastructure and OVER another one e Unknown Value used when it is impossible to determine the crossing level at the track 39 Column Name Column Type Mandatory Short Name Description CROSSINTYP VARCHAR2 25 Yes CROSSINTYP The
38. lable or applicable 43 Column Name Column Type Mandatory Short Name Description STNUSR1ENA VARCHAR2 100 Yes STNUSR1ENA Station User Reference 1 The English language version of the company name using the facility Note A value of None will be stored in this field when information is either not applicable or not available STNUSR1FNA VARCHAR2 100 Yes STNUSR1FNA Station User Reference 1 The French language version of the company name using the facility Note A value of Aucun None will be stored in this field when information is either not applicable or not available STNUSR1RMK VARCHAR2 10 Yes STNUSR1RMK Station User Reference 1 The reporting mark associated to the User as assigned by a national or sub national agency The reporting mark usually represents the company acronym For example the reporting mark for Canadian National is CN Note A value of None will be stored in this field when information is either not applicable or not available STNUSR2ENA VARCHAR2 100 No STNUSR2ENA Track User reference 2 See description for STNUSR1ENA STNUSR2FNA VARCHAR2 100 No STNUSR2FNA Track User reference 2 See description for STNUSR1FNA STNUSR2RMK VARCHAR2 10 No STNUSR2RMK Track User reference 2 See description for STNUSR1RMK STNUSR3ENA VARCHAR2 100 No STNUSR3ENA Track User reference 3 See d
39. mple using diagram above Subdivision NID Unique National Identifier NID assigned to every Subdivision in GeoGratis 1867ddb0dc2b1 7df937b1204350c4a66 Name number or colour aaa associated to the Webbwood ame odo Subdivision we Location where the Subdivision Subdivision starts 4 8 Start Distance expressed as a distance Subdivision Location where the Subdivision ends 180 7 End Distance expressed as a distance Subdivision Unit Of Distance Unit of distance for the Subdivision Start and End points expressed as either Mile or Kilometre Mile Many Canadian railway companies still use miles to identify Subdivision distances In ORWN Subdivision Start and End Distance points are represented in the Junction layer where the field value for Subdivision Limit Indicator Yes Where a Subdivision limit is not defined by a switch diamond or end junction a virtual Junction feature is created at the Subdivision s transition point with a Junction Type of Administrative Subdivisions often have Marker Posts affixed to the side of the rail at regular intervals whose markings generally increase in value as the line progresses westward or northward For additional information refer to the Marker Post section of this document Subdivision associations will be primarily made through the ORWN Track layer where each feature must be associated to one 1 and in rare cases
40. n have up to 4 companies users working out of the facility 13 To simplify maintenance NRCAN has deliberately omitted Junction to Track associations for Junctions in GeoGratis as their locations are mostly derived ONAARWN 12 Note to Ontario Railway Network ORWN Users At this time Natural Resources Canada GeoGratis does not have plans to create a normalized geodatabase for their implemented NRWN dataset NRWN will in the interim be maintained as denormalized flattened attributes layers by GeoGratis staff As a consequence the Ontario Railway Network ORWN version of the NRWN model has been implemented in the LIO database in the same denormalized fashion NRWN physical table column names were also retained in the ORWN model This simple design will facilitate ORWN Data Class updates derived from NRWN data exports If and when work proceeds to normalize the NRWN database the ORWN version of the model will be updated ORWN layers will be loaded into the Land Information Ontario LIO Warehouse with pre populated data derived from denormalized GeoGratis NRWN data layer exports With the exception of date fields associated with data revisions all fields in the NRWN ORWN dataset are assigned values even when there is no attribute information available about the feature The default values are listed below Value Description This value is common in numeric fields where information is not available or applicable for the fea
41. ng Lafarge Lime Huron Central Railway Algoma Mills Ontario SRCS and STOP Figure A16 Standard Reflectorized Railway Crossing Sign and Stop Sign located at mile 101 9 of the Huron Central Railway Webbwood Subdivision Blind River Ontario 56 CROSACESS Private Figure A17 Typical signage erected at a private crossing ORWN_JUNCTION_FT TRAJUNCTYP Diamond PASSEN STATION Figure A18 Right Example of a diamond junction type in Franz Ontario where the north south Canadian National Railway crosses the east west Canadian Pacific Railway Left Diamond symbolized in the MNRF Make a Topographic Map web application 57 End Figure A19 Right Example of an end junction type on the Algoma Central Railway in Sault Ste Marie Ontario Left End junction symbolized in the MNRF Make a Topographic Map web application Switch Figure A20 Right Example of a switch junction type on the Huron Central Railway in Blind River Ontario Left Switch symbolized in the MNRF Make a Topographic Map web application 58 Version 1516 1 59
42. ny br Ontario User Guide for Ontario Railway Network LIO Data Classes ORWN Track ORWN Structure Line ORWN Structure Point ORWN Crossing ORWN Junction ORWN Marker Post Spatial Data Infrastructure Mapping and Information Resources Branch Corporate Management and Information Division Ministry of Natural Resources 2015 05 28 Disclaimer This technical documentation has been prepared by Her Majesty the Queen in right of Ontario as represented by the Ministry of Natural Resources and Forestry the Ministry No warranties or representations express or implied statutory or otherwise shall apply or are being made by the Ministry with respect to the documentation its accuracy or its completeness In no event will the Ministry be liable or responsible for any lost profits loss of revenue or earnings claims by third parties or for any economic indirect special incidental consequential or exemplary damage resulting from any errors inaccuracies or omissions in this documentation and in no event will the Ministry s liability for any such errors inaccuracies or omissions on any particular claim proceeding or action exceed the actual consideration paid by the claimant involved to the Ministry for the materials to which this instructional documentation relates Save and except for the liability expressly provided for above the Ministry shall have no obligation duty or liability whatsoever in contract tort or otherwise incl
43. orm one common structure This identifier allows for the reconstitution of a structure feature that is fragmented by junctions Refer to Figure A5 for an example of a grouped structure STRUENNAME VARCHAR2 100 Yes STRUENNAME The English language version of the railway structure name as assigned by a national or sub national agency Notes 1 A value of None will be stored in this field when information is either not applicable or not available 2 The point feature version of this data class does not include this attribute STRUFRNAME VARCHAR2 100 Yes STRIFRNAME The French language version of the railway structure name as assigned by a national or sub national agency Notes 1 A value of Aucun None will be stored in this field when information is either not applicable or not available 2 The point feature version of this data class does not include this attribute 37 Column Name Column Type Mandatory Short Name Description STRUCTYPE VARCHAR2 15 Yes STRUCTYPE The type of structure used to support or protect the track Permissible Values Bridge Manmade construction that supports track s on a raised structure and spans an obstacle such as a depression water a road or other tracks Refer to Figure A6 for an example of a Bridge Bridge Moveable Manmade construction that supports track s on a moveable raised structure and spans an obs
44. ory Short Name Description OGF_ID NUMBER 13 Ves OGF ID Ontario Geographic Feature OGF Id System generated object identifier unique at the application level NID VARCHAR2 32 Ves NID National Identifier NID assigned to every Station feature in the National Railway Network NRWN geodatabase STENNAME VARCHAR2 100 ves STENNAME The English language version of the station name as assigned by a national or sub national agency STFRNAME VARCHAR2 100 Yes STFRNAME The French language version of the station name as assigned by a national or sub national agency Identifies the type of station Permissible Values e Freight Scheduled stop along a Subdivision where infrastructure in present for the management of freight cars e Intermodal Station providing a service that allows for the movement of intermodal freight containers to other transportation type networks STNTYPE VARCHAR2 20 Yes STNTYPE Ww E e Maintenance Stop along the Subdivision where operating business occurs e Mixed Station providing both passenger and freight services e Other Other station type than those listed e Passenger Station Scheduled stop along a Subdivision where passengers may board or disembark e Unknown Value used when it is impossible to determine the station type NUMPLATEFR NUMBER 2 Ves NUMPLATEFR A value indicating the number of platforms available at the station Note A value of 1 will be stored in this field if information is not avai
45. plicable 33 Column Name Column Type Mandatory Short Name Description Maximum allowable operating speed for passenger trains as measured in the Unit of Speed field cae NUMBER S yeg SPEEDERSSE Note A value of 1 will be stored in this field if the speed information is not available or applicable Units of measure applied to the value stored in the Design Speed fields Miles Per Hour UNITOFSPEE VARCHAR2 20 Yes UNITOFSPEE OR Kilometres Per Hour OR Unknown The ORWN User Guide provides the context of permissible values used in this field Unique identifier ID usually a number assigned to the track and used internally by a national or sub national agency SOURCE MAAS PUNE 20 Ten cL Note A value of None will be stored in this field when information is either not applicable or not available The English name of the rail company that operates the track Note 1 A track operator is a railway company responsible for maintaining the track OPERATOENA VARCHAR2 100 Yes OPERATOENA signaling system bridges tunnels stations depots wharfs and other infrastructures connected with the track Note 2 A value of None will be stored in this field when information is either not applicable or not available The French name of the rail company that operates the track OPERATOFNA VARCHAR2 100 Yes OPERATOFNA Note A value of Aucun None will be stored in this field when information is
46. re Point ORWNS TPT sccsccevteiscveesessseestecvteerceteseessedetbersedvevenseassueezecsees ORWN Crossing OR WING ROS sarro conidios ooo ORWN Station ORWNSTN os ORWN Marker Post ORWNMKPO oooooccccccccccccccccccnncnnoncccncncnccnnnnnnnnnncnnnnnncnnnnnnnnnnnnnos ORWN Junction ORVWNJUNOCO cccccccccnonononononononcccnnnnnnnnnnnnnnnnncnnnnnnnnnnnnnnnnnncnnnnnnnnenennos 5 General Overview of ORWN Models coooooococococonoconoconeconeconeconeconiceneconineneceneneneceni s Data DESCIPHON seis ren E ORWN TRACK Psp A A eee A 14 ORWN STRUCTURE LINE ET tte tee tipa ds cedem tede 37 ORWN CROSSING FT ales a ii 39 ORVWN STATION ET nce a tee o ans de des do e a do 43 ORWN MARKER POST ET id ede lle lee rota tes 45 ORVVINE SIGING THONG Pitt illes 46 7 Links to Additional Information oo oon edge tool tt Ne 48 APPENDIX A ORWN Feature Examples 2 ccccececcceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaes 49 ORWBN CTRAGIS ITem A eter he A A Eee eheb ege A 49 TRACK CEASS Ire ce cte cee i e ue IE cd ce ced 49 ORWN STRUCTURE LINE T i ote A A otiose todos 51 ssepe 51 SITIRUGTYPES iu ciem ie De C UE NAME Dee a Nea e 51 ORWIN GROSSING TT cepe dett phe Ur ete ette here heroe 52 CROSSINGID ice io te rotto a teat ea sae ae rere rear oa 52 LEVELC ROSS tannin ele sit e eu ed md nu ee aie sum ete imd 53 WARNINGS YS irte AAA A EA AAA AN AAN A AE 54 CROSACESS M I SIDA A A NS AE 57 ORWIN JUNC
47. sect with and are uniquely identified They can be grouped under one crossing identifier CROSSINGID to indicate to the user that it is the same crossing In the example above the Parkway Trail in Thunder Bay Ontario passes beneath five separate rail line segments The crossing location is replicated for each track segment it crosses in the ORWN 52 Crossing layer but all five mapped point locations are considered to be the same crossing through the crossing identifier LEVELCROSS At Grade Figure A9 At Grade or level crossing at the intersection of 5th Line road and Algoma Central Railway in Sault Ste Marie Ontario Over anm emm RN A TTLTLLILLLTLLLIDE Figure A10 The Algoma Central Railway line crossing over Hwy 17 north of Sault Ste Marie Ontario 53 Figure A11 Huron Central Railway crossing UNDER the Hwy 17 overpass east of Thessalon Ontario WARNINGSYS FLB Figure A12 FLB on Frontenac St and Huron Central Railway crossing Sault Ste Marie Ontario It is located at mile 174 29 on the Webbwood Subdivision 54 FLBG Figure A13 FLBG at the Huron Central Railway and Hwy 17 bypass crossing in Sault Ste Marie Ontario It is located at mile 174 29 on the Webbwood Subdivision SRCS Figure A14 SRCS at a private crossing along the Huron Central Railway and old King s Highway Algoma Mills Ontario 55 STOP Figure A15 Stop Sign at a private crossi
48. ssigned to features identified in the diagram below GEOBASE METADATA applicable to all NRWN Layers Geometry Attribute Administrative Area Attribute Creation Date Standards Version Attribute Revision Date Security Classification Attribute Acquisition Technique Attribute Provider Geometry Creation Date Geometry Revision Date Geometry Acquisition Technique Geometry Planimetric Accuracy Geometry Provider 3 TRACK made up of 6 Operator 4 Subdivision Subdivision NID Track NID 4 or more English Name Subdivision Name Track Name French Name Start Distance Track Classification Reporting Mark End Distance Gauge TRACK SEGMENT Operator Start Distance Unit of Distance Electrification Track Segment NID Operator End Distance Source Number of Tracks Operator Unit of Distance Transport Type Regulator has up Status to2 Use Type referenced Design Speeds Owner Eng Fr Feature Distance referenced TRACK Within Referenced amp has up English Name Track Subdivision s Subdivision info to 4 French Name Reporting Mark has up to 4 12 STATION Station NID Station Name Eng Fr Station Type of Platforms STRUCTURE CROSSING Line Crossin g NID MARKER POST Structure Line P Crossing ID group Marker Post NID Structure ID group Level of Crossing 1 Structure Name din Structure Type Crossing Type Warning System Type Road Classification 13 JUNCTION STRUCTURE Crossing Type Name
49. sually consisting of two parallel rails tracks on which a powered vehicle or locomotive pulls or pushes connected rolling stock along a rail line in order to transport freight or passengers from one destination to another e Tramway Railway transport system used in urban areas which often runs at street level sharing road space with motor traffic and pedestrians Tramways are usually electrically powered e g Toronto Transit Commission Tramway e Subway Railway transport system used in large urban areas which runs on separate track from other transport systems is usually electrically powered and mostly runs underground e Suspended Railway transport based on a single overhead rail track acting as support and guideway from which a vehicle is suspended beneath to move along the railway e Unknown Value used when it is impossible to determine the transport type USETYPE VARCHAR2 25 Yes USETYPE Identification of what is transported on the track Permissible Values e Freight Track is used solely for the transport of freight e Freight and Passenger Track is used for freight and passenger service e Freight and Tourist Track is used for freight and tourist service e Passenger Track is used solely for passenger service e Tourist Track used solely by a tourist operator e g South Simcoe Railway e Unknown Value used when it is impossible to determine the type of track use 32
50. t of Thessalon EAI O E m 54 Figure A12 FLB on Frontenac St and Huron Central Railway crossing Sault Ste Marie Ontario It is located at mile 174 29 on the Webbwood Subdivision eeeeeeeeeeeeeeeeeeeeeees 54 Figure A13 FLBG at the Huron Central Railway and Hwy 17 bypass crossing in Sault Ste Marie Ontario It is located at mile 174 29 on the Webbwood Subdivision 55 Figure A14 SRCS at a private crossing along the Huron Central Railway and old King s Highway Algoma Mills Ontario 3 ccsecescvesccestcesdcesccesenenecesecestces ceseceseceseceserestceseces cesecesdeeseresepeseres 55 Figure A15 Stop Sign at a private crossing Lafarge Lime Huron Central Railway Algoma NUS OTI a RETE PEN 56 Figure A16 Standard Reflectorized Railway Crossing Sign and Stop Sign located at mile 101 9 of the Huron Central Railway Webbwood Subdivision Blind River Ontario 56 Figure A17 Typical signage erected at a private crossing eseeeeee 57 Figure A18 Right Example of a diamond junction type in Franz Ontario where the north south Canadian National Railway crosses the east west Canadian Pacific Railway Left Diamond symbolized in the MNRF Make a Topographic Map web application 57 Figure A19 Right Example of an end junction type on the Algoma Central Railway in Sault Ste Marie Ontario Left End
51. tacle such as a river a road or other tracks Culvert Device used to channel water or as a passage for a trail or road under track s Note Because of their size and orientation beneath tracks the majority of culverts are represented as point features in the ORWN Structure Point layer Dam Manmade linear structure built along a waterway or floodway to control the flow of water and supporting track s Example Seguin River Dam in Parry Sound Ontario Snow Shed Manmade roofed structure that protects Track s from snow or rock slides Note There are no snow sheds on any of Ontario s railway networks Tunnel Enclosed manmade construction built to get track s through or below a natural feature or other obstructions Refer to Figure A7 for an example of a Tunnel Unknown Value used when it is impossible to determine the structure type For shared track and subdivision information refer to Track and Subdivision Reference columns For columns shared in all tables refer to NRWN and LIO Common Metadata columns 38 ORWN_CROSSING_FT The location along the rail network where a track crosses another network It identifies the location and type of crossing that traverses either on above or below a track A crossing includes any structure supporting that part of the track or facilitating the crossing Crossings are often equipped with public warning signs and audio visual signaling safeguards to control and protect vehicular and pedestr
52. te 2013 JUN 19 Includes the following Data Classes NON SENSITIVE ORWN Track ORWNTRK line layer ORWN Structure Line ORWNSTLN line layer ORWN Structure Point ORWNSTPT point layer ORWN Crossing ORWNCROS point layer ORWN Station ORWNSTN pointlayer ORWN Marker Post ORWNMKPO point layer ORWN Junction ORWNJUNC point layer ORWN TRACK FT NUMBER 13 TRACKNID TRACKSEGID TRACKNAME TRACKCLASS REGULATOR TRANSPTYPE USETYPE GAUGE NUMTRACKS ELECTRIC STATUS SPEEDFREIT SPEEDPASSE UNITOFSPEE SOURCEID OPERATOENA OPERATOFNA OPERATORMK OPSUBSTART OPSUBEND OPSUBUDIS OWNERENA OWNERFNA TRKUSRIENA TRKUSRIFNA TRKUSRIRMK TRKUSR2ENA TRKUSR FNA TRKUSR2RMK TRKUSRIENA TRKUSA3FNA TRKUSR3RMK TRKUSRAENA TRKUSRAFNA TRKUSR4RMK SUBDINID SUBDITNAME SUBDISTART SUBDIEND SUBIUNITDI SUBDRNID SUBDI2NAME SUBD2START SUBD2END SUB2UNITDI ADMINAREA SPECVERS SECURCLASS GEOCREDATE GEOREVDATE GEOACQTECH GEOACCURA GEOPROVIDE ATTCREDATE ATTREVDATE ATTACQTECH ATTPROVIDE VARCHAR2 32 VARCHAR2 32 VARCHAR2 100 VARCHAR2 20 VARCHAR2 10 VARCHAR2 10 VARCHAR2 25 VARCHAR2 10 NUMBER 1 VARCHAR2 8 VARCHAR2 20 NUMBER 3 NUMBER 3 VARCHAR2 20 VARCHAR2 50 VARCHAR2 100 VARCHAR2 100 VARCHAR2 10 NUMBER 5 2 NUMBER 5 2 VARCHAR2 9 VARCHAR2 100 VARCHAR2 100 VARCHAR2 100 VARCHAR2 100 VARCHAR2 10 VARCHAR2 100 VARCHAR2 100 VARCHAR2 10 VARCHAR2 100 VARCHAR2
53. ture 1 is used in these instances as 0 zero can be a legitimate value e g Subdivision Start Distance 1 Found mostly in free text fields e g English names where None information is not available or is not applicable A value of Aucun None will be present in French name versions The NRWN geodatabase stores numeric code lookup values instead of text for all permissible values To make the dataset more user friendly the ORWN version differs by storing the full text value description instead of the numeric code Before we review ORWN layers in detail the following section provides readers with a primer about other associated information which will be referred to in the ORWN data About Railway Subdivisions A Subdivision is an administrative unit of a national or regional network of tracks used to transport freight and or passengers A Subdivision is identified by a name or number and or a colour and is delimited by a Junction point at each extremity Huron Central Railway Subdivision Webbwood Lake Figure 2 Extent of the Webbwood Subdivision of the Huron Central Railway in Northern Ontario Several railway Subdivisions are often interconnected to form a greater administrative Railway Division In railway practice the Subdivision Start Distance always begins at 0 00 Mile or Kilometre Information about a Subdivision in NRWN includes Attribute Name Description Exa
54. two 2 Subdivisions Likewise each Subdivision is associated to one or more track segments Track Segmentation Rules How track and track segment features are defined by NRWN ORWN Junction Junction Administrative Switch T ED E eee ee a iio 3 A 2S Na aw Hi Track NID 433dc3e9d02649d89c51de1b5cf4f0e4 Figure 3 Example of a Track as defined by National Railway Network GeoGratis standards A Track is defined by the presence of a Junction at both ends as illustrated in the diagram above Each Track is assigned a unique National Identifier NID This value is stored in the Track NID field A Track is made up of one or more track segments with a new feature created whenever there is a change in one or more of the track attributes e g a different Track Operator Status Design Speeds etc 15 Rules e A separate feature is created for each track segment in the ORWN Track layer e Each track segment is assigned a unique NID and this value is stored in the Track Segment NID field e Agrouping of unique segments defined for a Track can all share the same Track NID as demonstrated in the diagram below Junction Junction Administrative Switch a Track NID 433dc3e9d02649d89c51de1b5cf4f0e4 L Track Segment NIDs a 0ee0d335a1c9463ead20c95eb939dc12 b 424096693185423ea1d33f181d400c23 c 6cc495cf03434095b 14d6b95cda14a88 d cec16a6464d2459c958e96b07999f6a3 Figure 4 Example of a Track
55. uding any liability or negligence The limitations exclusions and disclaimers expressed above shall apply irrespective of the nature of any cause of action demand or action including but not limited to breach of contract negligence strict liability tort or any other legal theory and shall survive any fundamental breach or breaches Cette publication sp cialis e n est disponible qu en anglais 2015 Queen s Printer for Ontario 2 Additional Information For more information about this document please contact io ontario ca Unless noted otherwise All photo and graphic examples are credited to James Gratton Land and Resources Cluster Ministry of Natural Resources and Forestry Map examples were created from MNRF s Make a Topographic Map or LIO Mapper using Topographic Cache Aerial imagery examples sourced from Northern Ontario Forest Cover 2005 2010 Aerial Photography Due to the technical nature of this document users may encounter some issues with accessibility For assistance please contact Spatial Data Infrastructure at sdi ontario ca Executive Summary Key Words Railroad Railway Trains Tracks Abstract A user guide to the extent and context of information stored in the Ontario Railway Network ORWN Land Information Ontario Data Classes Table of Contents Disclaimer 0c ce ceececcecceceeceeceececuecuececeeaecuecueceeaesaecueceeaeeaecaecueseeaesaecueseeaesaecueceeaeeesnesneaes Additional
56. xed to poles or stakes beside a track line They are used by railway company staff as reference points for time table progress track maintenance work orders and for reporting rail conditions and incidents Marker posts are often used by railway crews and the MNRF to report and or respond to the location of trackside fires For example the marker post shown in Figure 27 is located at Mile 90 of the Webbwood Subdivision on the Huron Central Railway Railway companies typically denote distances along Subdivisions with values increasing from east to west or south to north Caveat At this time the NRWN ORWN inventory of marker posts only includes data for lines operated by Canadian National Railways ORWN Junction ORWNJUNC Virtual connector point feature of the National Railway Network NRWN A Junction may be located e atthe intersection of three or more sets of tracks e atthe track end e atthe transition of a national provincial or territorial boundary e atthe beginning and end of a Track Subdivision Junctions are stored and represented in the LIO ORWN Junction layer as point features Note NRWN did not make Track Subdivision references because junction location features are mostly derived and are sometimes virtual not visible on the ground 28 5 General Overview of ORWN Models Model Name Ontario Railway Network ORWN Adapted from the National Railway Line Network NRWN standards Model Revision Da
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