What must be done if a driver's vehicle breaks down?

When a driver's vehicle breaks down, it is essential to prioritize safety by moving the vehicle to a safe location if it is feasible to do so. This reduces the risk of accidents and ensures that the driver and any passengers are not exposed to potential danger from oncoming traffic. Once the vehicle is in a safe position, turning on hazard lights signals to other drivers that there is a problem, alerting them to exercise caution.

Additionally, using warning devices, such as flares or reflective triangles, can further enhance visibility and safety. These measures are important because they help prevent additional incidents and create a safer environment for both the stranded driver and other road users. Thus, the correct response emphasizes both immediate safety and communication with other drivers.