A00        Unclassified
A11-A19    Interstate and other limited access highways
A21-A29    U.S. and other highways
A31-A39    Secondary and connecting roads
A41-A49    Local roads
A51-A53    Dirt roads
A61        Cul-de-sac
A62        Traffic circle
A63        Access ramp
A64        Service road
A65        Ferry crossing
A66        Gated barrier
A67        Toll booth
A70-A75    Alleys, walkways, private roads, etc...