In what two ways are roads classified on a highway map?

• A. Designation or capacity
• B. Color and width
• C. Length and surface type
• D. Age and maintenance status

Answer: (A)

On a highway map, roads are labeled by their official designation and by their capacity. The designation tells you what kind of road it is—an interstate, a U.S. highway, a state route, or a local road—which reflects jurisdiction, standards, and typical rules for access and speeds. Capacity refers to how much traffic the road is designed to carry, which often aligns with features like the number of lanes or whether it’s a controlled-access highway. Together, designation and capacity give you a clear sense of both the road’s role in the network and how it will perform for travel.

Color and width are mainly map styling choices that help the eye distinguish roads but don’t constitute the underlying classification of the road itself. Length and surface type describe physical characteristics of a road, not how it is categorized in the highway system. Age and maintenance status relate to condition, not the official category or the traffic-handling capability of the road.