What is the primary purpose of minimum speed signs?

• A. To keep traffic flowing smoothly
• B. To reduce fuel consumption
• C. To enforce the maximum speed limit
• D. To encourage drivers to stop more often

Answer: (A)

Minimum speed signs set the slowest speed that drivers should maintain on a road. Their main purpose is to keep traffic flowing smoothly and safely by preventing vehicles from traveling well below the others, which can cause sudden lane changes, braking, and rear-end crashes. Maintaining a steady pace helps drivers anticipate what others are doing and stay in the correct lane, reducing congestion and hazards. These signs are not about enforcing the maximum speed limit, nor about encouraging drivers to stop more often, and they aren’t primarily about fuel use.