In Montana, what is the legal action a driver must take at a railroad crossing?

At a railroad crossing in Montana, the law requires drivers to completely stop and look for trains before proceeding. This action is crucial because trains can approach at high speeds, and their size and weight make them much harder to see or gauge from a distance compared to vehicles. Stopping allows the driver to ensure that the track is clear and to avoid potential collisions, which can be catastrophic.

Merely slowing down or keeping an eye on the tracks, as suggested in the other options, does not provide enough safety. It is essential to stop completely to confirm that no train is coming, given the potential dangers involved in crossing train tracks. Additionally, signaling before crossing is unnecessary unless changing lanes or merging into a different roadway, which does not directly apply at a railroad crossing. Thus, a complete stop and a careful look enhances safety for all road users.