Why is it important to maintain a safe following distance on the expressway?

Maintaining a safe following distance on the expressway is crucial primarily to allow for sudden stops. This distance provides drivers with the necessary time and space to react appropriately if the vehicle in front of them suddenly brakes or encounters an unexpected obstacle. Expressway speeds are typically higher than those on regular roads, so a greater following distance is essential to reduce the risk of rear-end collisions. In scenarios where traffic unexpectedly slows down, having adequate space allows the driver to apply brakes smoothly rather than having to react suddenly, which can cause panic and increase the likelihood of an accident. A safe following distance facilitates better decision-making and enhances overall road safety, enabling drivers to maintain control in various situations.