Which statement best describes the primary highway category?

Which statement best describes the primary highway category?

• A. It includes Federal Interstate routes, primary State routes, expressways, turnpikes, freeways, parkways, throughways, and other roads of equivalent importance
• B. It includes only dirt backroads
• C. It includes only toll roads
• D. It includes only private driveways

Answer: (A)

The main idea is that the primary highway category covers the major arterial roads that handle the bulk of long-distance and regional traffic. This includes Federal Interstate routes, primary State routes, and high-capacity facilities such as expressways, turnpikes, freeways, parkways, and throughways, plus other roads that serve the same level of importance in linking regions and enabling heavy through-traffic. These roads are typically publicly maintained and built for higher speeds and volumes, sometimes with limited access. Dirt backroads and private driveways don’t fit because they serve local or private use and aren’t part of the major public highway network. Toll roads can be part of this category when they function as major arterials (like turnpikes), but the category is broader than just toll roads.