Railroad Crossing Sign - Official RR Warning Symbol for Safety #170166 (License: Personal Use)

The image displays a classic U.S.-style circular railroad crossing warning sign: bright yellow background with a thick black border, two large black diagonal bars forming an "X", and the letters "RR" on either side. The design follows MUTCD (Manual on Uniform Traffic Control Devices) standards for maximum visibility and recognition at grade crossings. Its bold contrast ensures legibility even in low-light or adverse weather conditions.

Used on roadways near railway intersections to warn drivers and pedestrians of active train traffic; commonly mounted on posts or overhead gantries. Matches user intent for transportation safety information, traffic signage education, or regulatory compliance resources.