What is a good rule for determining safe following distance behind another car?

A good rule for determining a safe following distance is to keep at least two seconds away from the vehicle in front of you. This practice allows for a sufficient reaction time in case the vehicle ahead needs to stop suddenly or encounters an obstacle. The two-second rule helps drivers maintain a safe gap under normal driving conditions, and it can be adjusted based on factors such as weather conditions, road conditions, and driving speed.

By allowing for at least two seconds of distance, you can better assess the road ahead and make informed decisions while driving. This distance provides enough time to react to sudden changes, helping to prevent rear-end collisions and ensuring a safer driving experience for everyone on the road.