North Carolina/Special roads/Main Discussion View history

Dirt (unpaved/gravel) roads

The USA Standard (matrix table) does not specify how to set unpaved road segments, so we define that here. Unpaved roads may or may not be classified in the states' functional classification system. If they are defined higher then local, set the road type according to the functional classification. If they are not, set the road type to Dirt Road / 4x4 Trail. The majority of dirt roads are not functionally classified.

How to determine when to set a dirt road as type dirt road		Dirt (unpaved or gravel)
Functional Class	Collector	PS
	Local	Off-road / Not maintained
	not classified	Off-road / Not maintained

If the user's client options are set to avoid dirt roads, they will still be routed on dirt roads functionally classified as either a Collector. This is necessary to insure beginning-to-end routing should the origin/destination be on an unpaved road however, Waze route pruning will only consider these lower-priority roads (Primary Street, Street, Dirt) near the origin/destination.

Examples:

• An unpaved street identified in the NCDOT system as a Collector is a Primary Street.
• An unpaved street identified in the NCDOT system as a Local road is a Dirt.
• Any unpaved road not listed in the NCDOT system is Dirt.