LLOOCCAATTIIOONN RREEFFEERREENNCCIINNGG SSYYSSTTEEMM IInnttrroodduuccttiioonn && TTeecchhnniiccaall MMaannuuaall 22001188 EEddiittiioonn Roadway Inventory & Testing Unit Asset Management Division Pennsylvania Department of Transportation LOCATION REFERENCING SYSTEM Introduction & Technical Manual 2018 Edition Please direct questions or comments regarding this manual, the Location Referencing System, or any other related topic, to: Janice Arellano, P.E. Chief, Roadway Inventory & Testing Unit Pennsylvania Department of Transportation 907 Elmerton Avenue – BOMO Annex Harrisburg, PA 17110 Telephone: 717-787-7294 FAX: 717-705-8921 Email: [email protected] Contents 1 Introduction LRS Overview ...................................................................................................................................................... 2 LRS History ....................................................................................................................................................... 3 LRS SLD’s .............................................................................................................................................................. 4 2 LRS Routing & Segmentation LRS Key ............................................................................................................................................................. 6 State Routes (SR’s) .............................................................................................................................. 7 Non-tolled Pennsylvania Turnpike Routes ..................................................................................................... 7 LRS Even/Odd Numbering Convention ................................................................................................ 8 Route Hierarchy .................................................................................................................................................. 8 Numbering of Non-Traffic Routes (Quadrant SR’s) ............................................................................. 9 Interchanges ......................................................................................................................................... 10 Wye’s .................................................................................................................................................... 11 Other SR Numbering Conventions........................................................................................................ 11 SR Segmentation ................................................................................................................................ 12 Segment Markers. ............................................................................................................................................. 14 Null Segments ................................................................................................................................................... 17 Turnback Null Segments ................................................................................................................................ 18 Interchange Segmentation ............................................................................................................................ 19 9000 Route segmentation ............................................................................................................................. 22 Offsets ............................................................................................................................................................... 23 3 LRS/RMS Codes LRS Codes .......................................................................................................................................................... 25 Determining Intersection Types .................................................................................................................... 26 RMS Intersection Coding and LRS Coding Equivalents ................................................................................. 27 RMS/LRS Intersection Code Conversion Table................................................................................................ 31 RMS Signal Codes .............................................................................................................................................. 32 4 Roadway Attribute Location Quick Guide Event Point Location Guidelines ...................................................................................................................... 34 5 Graphical Illustration of Attribute Locations Event Point Diagram Legend ............................................................................................................................ 40 Stand Alone Segments & Segments on Other Signs ..................................................................................... 41 5-1: Segments (Without a Fixed Feature), Stand Alone Segment Signs ..................................................... 42 5-2: Municipal and County Boundaries .......................................................................................................... 42 5-3: Mileposts ............................................................................................................................................... 43 T-Intersections .................................................................................................................................................. 44 5-4: Intersection of 2 Undivided SR’s ........................................................................................................... 45 5-5: Intersection of Divided (CR) and Undivided (TR) SR’s .......................................................................... 45 5-6: Intersection of Divided (CR) ≥ 20 ft and Undivided (TR) SR’s .............................................................. 46 5-7: Intersection of 2 Divided SR’s ............................................................................................................... 46 5-8: Intersection of 2 Divided SR’s, one with a ≥ 20 ft barrier (CR) ............................................................ 47 5-9: Intersection of Divided SR’s, (TR) with a ≥ 20 ft barrier ....................................................................... 47 5-10: Intersection of Divided SR’s, both with ≥ 20 ft Barriers ...................................................................... 48 5-11: Intersection of an Undivided SR (CR) and an Undivided Local Road (TR) .......................................... 48 5-12: Intersection of an Undivided SR and a Divided Local Road (TR) with a barrier of ≥ 20 ft ................. 49 5-13: Intersection of a Divided SR with a ≥ 20 ft barrier and an Undivided Local Road (TR) ...................... 49 Cross Intersections ........................................................................................................................................ 50 5-14: Intersection of Undivided SR’s, both (CR’s) ........................................................................................ 51 5-15: Intersection of a Divided and Undivided SR’s ...................................................................................... 51 5-16: Intersection of a Divided SR, one with a barrier ≥ 20 ft and an Undivided SR .................................. 52 5-17: Intersection of 2 Divided SR’s, both (CR’s) ......................................................................................... 52 5-18: Intersection of Divided SR’s, with the SR being tested having a barrier ≥ 20 ft ................................ 53 5-19: Intersection of Divided SR’s, with the intersecting SR having a barrier ≥ 20 ft ................................. 53 5-20: Intersection of Divided SR’s, both having a barrier ≥ 20 ft ................................................................ 54 5-21: Intersection of Turning SR’s, both transitioning from Divided to Undivided .................................... 54 5-22: Intersection of Turning SR’s, transitioning from Undivided to Divided with a ≥ 20 ft barrier .......... 55 5-23: Intersection of Turning SR’s, with 3 of the intersection having a ≥ 20 ft barrier .............................. 55 5-24: Intersection of Turning SR’s ................................................................................................................ 56 5-25: Intersection of an Undivided SR and Undivided Local Road .............................................................. 56 5-26: Intersection of a Divided SR having a ≥ 20 ft barrier and an Undivided Local Road ......................... 57 Y-Intersections .................................................................................................................................................. 58 5-27: Intersection of Undivided SR’s ............................................................................................................ 59 5-28: Intersection of Divided and Undivided SR’s ....................................................................................... 59 5-29: Intersection of a Divided SR having a ≥ 20 ft barrier and Undivided SR’s ......................................... 60 5-30: Intersection of Divided SR’s ................................................................................................................ 60 5-31: Intersection of Divided SR’s with the SR being tested having a ≥ 20 ft barrier ................................. 61 5-32: Intersection