What action should you take if you miss your exit on the highway?

When you miss your exit on the highway, the safest action is to proceed to the next exit instead of attempting to backtrack. Highways are designed for continuous flow at higher speeds, and backing up or stopping on the highway can create dangerous situations, not only for yourself but also for other drivers around you. By continuing to the next exit, you can safely navigate back in the direction you need to go without disrupting traffic. This approach aligns with safe driving practices and helps maintain the flow of traffic, reducing the risk of accidents.

The other options involve actions that can lead to dangerous scenarios: backing up on a highway is illegal and highly unsafe, stopping on the highway poses a significant risk of collisions, and making a U-turn can also be hazardous depending on the traffic situation. Thus, proceeding to the next exit is the most practical and safe choice.