What should the driver of a disabled truck or bus do first?

When a truck or bus becomes disabled, the driver's immediate priority should be to ensure safety, both for themselves and for other road users. Setting out flares, fuses, or reflectors serves as a crucial first step in this process. This action alerts approaching vehicles to the presence of a disabled vehicle, reducing the risk of accidents and enhancing the visibility of the situation.

Using warning devices like flares or reflectors is essential for creating a safe perimeter around the disabled vehicle, especially if it is located in a high-traffic area. This measure not only protects the driver but also helps to inform other drivers in advance, allowing them to adjust their speed or change lanes accordingly.

After the area is made safe with proper warning signals, the driver can then consider other actions such as seeking assistance or attempting to restart the vehicle, but safety should always be the first concern.