| Primary roads are generally divided, limited-access highways within the interstate highway system or under state management, and are distinguished by the presence of interchanges. |
| Ramp designates a road that allows controlled access from adjacent roads onto a limited access highway, often in the form of a cloverleaf interchange. |
| Secondary roads are main arteries, usually in the US Highway, State Highway, or County Highway system. |
| Local roads are generally a paved non-arterial street, road, or byway that usually has a single lane of traffic in each direction. |
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| Service Drive provides access to structures along the highway, usually parallel to a limited access highway. |
| Alley is generally a service road that does not generally have associated addressed structures and is usually unnamed. |
| Private (service vehicles, logging, oil fields, ranches, etc.) is a road within private property that is privately maintained for service, extractive, or other purposes. |
| Bike Path or Trail is a path that is used for manual or small, motorized bicycles, being either too narrow for or legally restricted from vehicular traffic. |
| Bridle Path is a path that is used for horses, being either too narrow for or legally restricted from vehicular traffic. |
| Any road or path type that does not fit into the above categories |
| Parking Lot is the main travel route for vehicles through a paved parking area. |
| Stairway is a pedestrian passageway from one level to another by a series of steps. |
| Vehicular Trail (4WD, snowmobile) is an unpaved trail or path where a four-wheel-drive vehicle, snowmobile, or similar vehicle is required. |
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| Walkway/Pedestrian Trail is a path that is used for walking, being either too narrow for or legally restricted from vehicular traffic. |
| <all other values> |