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Mapping Resources & Functional Classification

Use only state DOT level FC maps when determine how to type (classify) a segment (Major Hwy, Minor Hwy, etc.). Some counties and cities have their own FC system, but only the state level system is to be used as a reference as these have been through a federal and state level approval process.

Maryland

Before changing the type of any road past the bounds of the rules, please post the situation to the Maryland Forum to receive feedback.

Washington DC

These are official sources of information that can be used in the editor, in the form of downloadable PDFs or interactive GIS maps. See Using External Sources for acceptable sources of information.

DC Atlas Plus

West Virginia

State highways that are primarily signed at entering intersections with a State Route number rather than a road name should be named SR-### ("SR-2"). County roads that are primarily signed at entering intersections with County Road numbers rather than a road name should be named CR-## or CR-##/## ("CR-65" or "CR-91/1").

Virginia

In Virginia, outside cities and major towns (and a couple of urban counties), nearly every road and street is designated as a "state highway" and assigned a number for VDOT inventory purposes. Primary state highways have numbers in the range of 2 to 599 (and, as exceptions, 785, 895), displayed in a route marker using a shield design. All other numbers from 600 up are secondary highways; if these roads have route markers (many do not), they use a circle design instead of a shield. See Virginia DOT Route Index Resources for more info.