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Iowa Class C Knowledge Test Practice
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Passing target: 20/25 correct (TLA practice target)
Warning, Construction & Information SignsStandalone practice
What does the white crossbuck at a railroad crossing identify?
Correct answer: The crossing itself, where you must yield to trains.
Why
The crossbuck identifies the railroad crossing. Slow, look and listen, obey any signals, gates or STOP/YIELD controls, and yield to a train. The round yellow railroad warning appears in advance and serves a different location cue.
Verified against Iowa Driver's License Manual and current primary rules · Crossbuck at the railway · p. 12, 13
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