What should a driver do if a fire starts in the trailer being pulled by their vehicle?

In the event of a fire starting in the trailer, disconnecting the tractor from the trailer is the most effective and safety-conscious action a driver should take, provided it can be done safely. This action helps to minimize risk to the driver and any passengers by creating distance between themselves and the source of the fire.

By detaching the trailer, the fire is less likely to spread to the tractor, which could lead to an explosion or further damage. It also ensures that the vehicle can be moved if necessary, keeping the area safer for the driver and others nearby.

Remaining with the trailer until help arrives can be extremely dangerous, as the fire can escalate and pose significant risks. Trying to extinguish the fire with water may not be effective and in some cases can actually make the situation worse, especially if flammable materials are involved. Driving away quickly might seem like a quick solution, but it could endanger other road users if the fire spreads or the trailer is not properly secured. Thus, properly managing the situation by disconnecting the trailer is the best course of action.