What is the primary reason to use warning devices during a vehicle breakdown?

Using warning devices during a vehicle breakdown is primarily meant to alert other drivers of your presence. When a vehicle is disabled on the roadway, it poses a risk not only to its occupants but also to other drivers. By utilizing warning devices such as hazard lights, reflective triangles, or flares, you effectively communicate to approaching drivers that your vehicle is not in motion and that they should exercise caution. This helps prevent potential accidents, as other drivers can see your vehicle from a distance and can adjust their speed or lane position accordingly.

While it may be important to signal for help or be cautious about towing, these are secondary considerations. The pressing need in the moment is to ensure that other road users are aware of the situation and can navigate safely around your vehicle.