Statewide coverage of New York State's Touring and Reference Route System. Data is copyright protected, a signed license is required or access through the New York State GIS Data Sharing Cooperative. Interchanges involving ramps are generalized to a node. Milepoint linear referencing system. The Milepoint route system uses a precision odometer reading along a route.
Measurements are re-zeroed each time the road crosses a county or city line.
These routes were originally included since they were possible candidates for inclusion in the National Highway System. They use a temporary route identifier and will eventually be replaced with forthcoming Local Highway Route Systems. This 'Sufficiency' publication describes the extent of highways on the state system and is updated annually. At a later date, the Milepoint route system was intermediately calibrated at major intersections, for higher accuracy. Updates are made to the route system based on annual updates of the Highway Sufficiency Ratings publication.