What is the purpose of a temporary traffic signal in a work zone?

• A. To replace pedestrian crossings.
• B. To randomly stop traffic without reason.
• C. To manage multi-direction flow when fixed signals are impractical, ensuring safe, orderly movement per MUTCD.
• D. To slow down vehicles only at night.

Answer: (C)

Temporary traffic signals in a work zone regulate traffic when a fixed signal system isn’t available or practical. They coordinate the movement of vehicles from multiple directions, allowing safe and orderly progress through the restricted area in line with MUTCD guidelines. This is essential when lanes are closed, detours are in place, or the normal signal setup can’t be installed quickly enough to keep traffic moving safely. They aren’t meant to replace pedestrian crossings, they don’t randomly stop traffic, and they operate during the work zone’s hours, not just at night.