How far from a railroad crossing must trains signal their horn?

Trains are required to signal their horn from a distance of 1,500 feet before reaching a railroad crossing. This regulation is in place to ensure the safety of both the train crew and any motorists or pedestrians near the crossing. The sound of the horn serves as an audible warning, allowing drivers to prepare to stop their vehicles if necessary. This distance provides ample time for drivers to react and take action, reducing the risk of collisions at crossings, which can be particularly dangerous.

The other distances presented do not meet the regulations established to enhance safety around railroad crossings. The longer signaling distance is part of safety measures to ensure that everyone in the vicinity is adequately warned and can react appropriately in order to prevent accidents.