Which type of vehicles are generally required to stop at all railroad crossings?

Heavy trucks and buses are generally required to stop at all railroad crossings due to the safety regulations designed to prevent accidents. These vehicles are usually much larger and heavier than standard passenger vehicles, which makes it harder for them to stop quickly. Additionally, they frequently carry cargo that could pose a greater risk to safety if there were an incident at a crossing.

The need for heavy trucks and buses to stop stems from the potential for significant consequences in the event of a collision with a train, given their size and weight. Stopping allows the drivers of these larger vehicles to adequately assess the situation at the crossing and ensure that it is safe to proceed before continuing on their route.

In contrast, while other types of vehicles may have specific rules regarding railroad crossings, the requirement for heavy trucks and buses to stop is a uniform safety measure across many jurisdictions.