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The Permit Test
Railroad Crossbuck (MUTCD R15-1 sign)

Railroad Crossbuck

railroad sign · crossbuck · white

You are at a railroad crossing. Yield to trains — the crossbuck legally functions like a yield sign.

Visual breakdown
Two crossed white boards forming an X, reading RAILROAD CROSSING in black letters, mounted at the tracks themselves.
Shape recognition
X-shaped crossbuck — unique to railroad crossings, placed where the tracks meet the road.
Color recognition
White regulatory coloring: this is a legal yield requirement, not just a heads-up.
Memory trick
The X marks the exact spot where the tracks cross. X = 'eXpect a train.'
Real-world example
At a rural crossing with no gates or lights, the crossbuck is your only control — slow, look both ways, and cross only when clear.
Common mistakes
Treating it as informational. It is a yield sign: trains always have the right-of-way and can't stop for you.
Quick recall method
White X at the tracks = yield to the train, always.

Practice this sign

1 practice question cover this sign.

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