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Traffic signalsQuestion 124 of 223

What does an emergency-vehicle traffic control signal do?

  1. It gives green to all traffic near a fire station
  2. It flashes to tell drivers to slow down
  3. It lets drivers go during a power failure
  4. It stops all conflicting traffic so an emergency vehicle can go
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Correct answer: It stops all conflicting traffic so an emergency vehicle can go

This special signal stops conflicting traffic. An authorized emergency vehicle can then enter the road or intersection.

Source: Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD), 11th Edition with Revision 1 (FHWA, December 2025), Section 4M.01 Application of Emergency-Vehicle Traffic Control Signals, page 781

Practice traffic signals

Questions last reviewed: 18 October 2026