Final answer:
The 3-second rule in driving helps maintain a safe distance between your car and the car in front of you to prevent accidents caused by tailgating.
Step-by-step explanation:
The 3-second rule in driving is a guideline that helps maintain a safe distance between your car and the car in front of you.
It is not related to your total stopping distance, but rather protects you from potential accidents caused by tailgating.
The rule states that you should stay at least three seconds behind the vehicle in front of you to allow enough time to react and stop safely, especially in case of an emergency.