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Iowa Class C Knowledge Test Practice
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Passing target: 20/25 correct (TLA practice target)
Traffic Signals & Road MarkingsStandalone practice
A traffic signal facing the driver shows a steady circular red light. What is required before a permitted movement?
Correct answer: Stop and wait, except for a permitted turn after yielding.
Why
At a circular red signal, stop at the marked line, or before the near crosswalk if there is no line; if neither exists, stop before entering the intersection. A right turn may follow only after yielding and when no sign prohibits it. Iowa also permits a separately defined left turn from a one-way street onto another one-way street after stopping and yielding.
Verified against Iowa Driver's License Manual · Traffic Signals · p. 11, 19
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