Which of the following is a key factor in maintaining safe following distances?

The four-second rule is a critical method for maintaining safe following distances while driving, especially for truck drivers who need extra space to react due to their vehicle's size and weight. This rule suggests that drivers should stay at least four seconds behind the vehicle in front of them. This time buffer allows for sufficient reaction time in case the vehicle ahead stops suddenly or encounters an accident.

Following this rule helps ensure that drivers have ample time to make quick decisions during unforeseen circumstances, such as suddenly stopping or navigating around obstacles. The four-second following distance also accounts for different road conditions, weather factors, and the additional stopping distance required for larger vehicles, making it particularly important for truck drivers who may have longer braking distances compared to smaller vehicles. Keeping this rule in mind can significantly enhance road safety for everyone by reducing the risk of rear-end collisions.