What is the recommended following distance when driving under normal conditions on the expressway?

The recommended following distance of 3-4 seconds when driving under normal conditions on the expressway is based on maintaining ample space between your vehicle and the one in front of you. This distance allows for sufficient time to react to sudden stops or emergencies, which is particularly important at higher speeds found on expressways.

By keeping a 3-4 second gap, drivers can gauge their distance more effectively and adapt to changing traffic conditions. This recommendation helps to enhance safety by reducing the chance of rear-end collisions and providing the necessary space to maneuver if the traffic situation changes abruptly.

In addition, this following distance takes into consideration factors like your own reaction time, the road conditions, and the speed at which you are traveling, ensuring that you have enough time to stop safely if needed. This standard of following distance is widely endorsed by driving safety organizations for its effectiveness in promoting safe driving practices.