Railroad Crossing Sign - Official RR Warning Symbol for Safety #9777 (License: Personal Use)

The image shows a classic U.S. Department of Transportation (DOT) railroad crossing warning sign: a bright yellow circle with a black diagonal crossbuck ("X") and the letters "RR" on either side. The high-contrast design ensures visibility day or night, and it’s typically mounted at grade crossings where roads intersect railway lines. This sign precedes the actual crossing and often accompanies flashing lights or gates in active zones.

Used on roadways near railroad intersections to alert motorists, cyclists, and pedestrians of an upcoming rail crossing; commonly paired with advance warning signs, gate arms, and audible signals. Matches user intent for traffic safety education, transportation signage reference, or driver’s license exam prep.