What location is identified by a railroad crossbuck sign?

Correct answer: D – A highway-rail grade crossing
The Maryland manual states that a crossbuck identifies the location of a highway-rail grade crossing. It is different from the round warning sign, which warns that a railroad crossing is ahead. Watch for any additional signals, gates, or signs at the crossing.
Source: Maryland Driver’s Manual — § 4.B, “Colors & Shapes”


