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New Mexico Class D Written Test Practice
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Passing target: 70% (21/30)
Warning, Construction & Information SignsStandalone practice
On a curving rural highway you pass a yellow diamond sign that shows a traffic light with red, yellow and green lamps. No signal is in sight yet. What should you do?

Correct answer: Slow down and be ready to stop, because a traffic signal is ahead
Why
This warning is used where a curve, hill or other feature can hide a traffic light until you are close. Slowing early gives you time to see the signal and to stop smoothly, which also helps the driver behind you. A sudden hard stop at a signal you did not expect can lead to a rear-end crash.
Verified against New Mexico Driver Manual · Warning signs · p. 7, 8
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