What does a crossbuck (X-shaped) sign mark at a Nevada railroad crossing?
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A.
The boundary of the 50-foot no-parking zone
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B.
Advance warning of an approaching train crossing
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C.
The actual location of the train tracks Correct
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D.
A required stop line for all vehicles
The answer is "The actual location of the train tracks"
The crossbuck is posted at the actual crossing itself and marks the location of the train tracks. The round advance warning sign, by contrast, is posted before the crossing. Learners often confuse the crossbuck's role with the advance warning, with a painted stop line, or with the 50-foot no-parking rule around railroads.
The traps in the wrong answers
A. The boundary of the 50-foot no-parking zone
The crossbuck is a warning sign that marks where the tracks are; the 50-foot no-parking distance is measured from the nearest rail, not from the sign. This answer half-remembers the 50-foot figure and pins it to the most visible sign rather than to the rail itself.
B. Advance warning of an approaching train crossing
The round yellow railroad crossing sign posted before the tracks is the advance warning; the crossbuck sits at the crossing itself. This answer assumes any rail-crossing sign must be there to warn drivers a train is coming.
D. A required stop line for all vehicles
The crossbuck marks the tracks and is not itself a stop sign. A full stop is required when a stop sign, lowered gate, flashing lights, or an approaching train demand it. This answer applies the reflex, learned at traffic lights, of halting at any prominent white line painted across a lane.
This question tests your knowledge of Warning Signs in Nevada. Source: Nevada Driver Manual, "Signs, Signals and Markings," p.29..
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