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Colorado Class R Knowledge Practice Test
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Traffic Signals & Road MarkingsStandalone practice
All traffic signals at a four-way intersection are dark because of a power failure. No officer directs traffic. What should you do?
All signal lamps at a four-way intersection are dark. The question has no vehicles, stop halos or teaching routes.
Correct answer: Treat the intersection as a four-way stop.
Why
Treat a failed signal as a four-way stop: stop, check for other road users, yield to the vehicle that arrived first and to the vehicle on your right in a tie, and proceed only when safe. Obey an officer if one directs traffic.
Verified against Colorado Driver Handbook · Failed traffic signal · p. 10, 14
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