What should a driver do if their vehicle breaks down on the highway?

When a vehicle breaks down on the highway, it is crucial for the driver to move the vehicle off the road if possible. This action significantly enhances safety for both the driver and other road users by preventing potential collisions and allowing for a clear path for moving traffic. Being off the road reduces the likelihood of being struck by oncoming vehicles and provides a safer environment while waiting for assistance.

In addition to safety, moving the vehicle off the roadway can also help avoid traffic disruption. If a vehicle is left in a lane of traffic, it poses an immediate hazard to other drivers, increasing the chance of accidents. Staying in the vehicle with the engine running is also unsafe, as it could present risks if the vehicle is in the way of traffic or if there's a fire. Signaling for help while remaining in the lane does not contribute to safety either, as it does not take the necessary precautions to protect the driver or other road users from danger. Therefore, moving the vehicle off the road is the most responsible and safe action to take in the event of a breakdown.