Arizona Driving Permit Written Practice Test

What are signal lights for?

Decorative purposes Vehicle speed control To regulate the direction and flow of traffic Weather forecasts

Correct Answer:

To regulate the direction and flow of traffic

Explanation:

Signal lights are primarily used to regulate the direction and flow of traffic. Choosing option A is incorrect because signal lights serve a functional purpose rather than a decorative one. Option B is incorrect because vehicle speed is controlled by speed limits and driver behavior, not signal lights. Option D is incorrect because signal lights do not provide weather forecasts, they only regulate traffic.

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