What does a circular yellow sign with a black X indicate?

A circular yellow sign with a black X indicates a railroad crossing. This sign serves to alert drivers that they are approaching a point where train tracks cross the road, signaling them to be extra cautious. The black X is a visual cue, complementing the yellow background, which is associated with warning signs. When approaching such a sign, motorists should look for train tracks, be prepared to stop if a train is coming, and pay attention to any additional signals or lights that may indicate a train approaching the crossing.

This sign is essential for ensuring safety, as trains can travel at high speeds and may not be easily heard. It is important for drivers to fully understand and recognize this sign to avoid accidents at railroad crossings.