The sign is a Level Crossing Warning Sign. This triangular sign with a train symbol indicates that you are approaching a level crossing, where a railway line intersects with the road.

Drivers should be alert and ready to stop for any approaching trains. Pay attention to additional signals such as lights or barriers that may indicate a train is coming. Always ensure it is safe to cross before proceeding. Slow down, look both ways, and listen for any sound signals from the train.