Final answer:
If you miss an exit ramp on the freeway, you should continue to the next available exit rather than backing up. Backing up is illegal and dangerous. Safely find an alternative route or re-enter the freeway to return to the missed exit.
Step-by-step explanation:
If you miss your exit ramp on a freeway, it's important to remain calm and continue to the next available exit. Backing up on a freeway is both illegal and extremely dangerous, as other drivers are not expecting vehicles to be moving in the opposite direction of traffic. Instead, you should proceed to the next exit ramp, exit the freeway, then safely find a way to re-enter the freeway in the opposite direction or find an alternative route to your destination using surface streets.