Minimum speed signs are designed to:
- Keep traffic flowing smoothly. ✓
- Show current local road conditions.
- Test future traffic signal needs.
- Ensure pedestrian safety.
Answer: A. Keep traffic flowing smoothly.
Minimum speed signs are meant to keep traffic flowing smoothly.
Why this is the answer
The handbook explains that some highways post minimum speed limits so traffic keeps moving at a steady pace. Driving below that minimum can stop the flow of traffic and create a dangerous situation. That matches the idea that these signs exist to keep traffic moving smoothly, not to report conditions or predict signal needs.
Why the other answers are wrong
- B. Show current local road conditions. — The signs set a required minimum speed rather than reporting what the road or weather is like right now.
- C. Test future traffic signal needs. — Nothing in the handbook connects minimum speed signs to planning or testing future traffic signals.
- D. Ensure pedestrian safety. — The handbook ties minimum speeds to traffic flow and the danger of driving too slowly, not to protecting pedestrians.
Remember it
Think of a minimum speed sign as a floor for your speed: stay above it so you don't become the rolling roadblock.
Official handbook: New York State Driver's Manual (MV-21), Chapter 8: Defensive Driving – Speed