What is the first action a driver of a disabled truck or bus should take?

The first action a driver of a disabled truck or bus should take is to set out flares, fuses, or reflectors. This action is vital for ensuring safety on the road. By placing these warning devices, the driver is alerting approaching vehicles of the presence of a hazard, which reduces the risk of further accidents.

Using reflective devices or flares provides visibility, especially in low-light conditions, allowing other drivers to recognize that there is a stationary vehicle ahead and to take necessary precautions, such as changing lanes or slowing down. This proactive measure is essential not only for the safety of the driver and passengers in the disabled vehicle but also for the safety of other motorists on the road.

While turning on hazard lights is an important subsequent step, it is not sufficient on its own to convey the danger posed by a disabled vehicle at a distance. Calling for roadside assistance is also necessary but comes after properly signaling the hazard to ensure the safety of everyone involved. Waiting for help without any signals can be dangerous, as it could lead to collisions or other accidents due to the lack of visibility regarding the disabled vehicle.