What is the recommended following distance for a bus or truck?

The recommended following distance for a bus or truck is five seconds. This extended distance is essential due to several factors unique to larger vehicles, such as their size, weight, and braking capabilities. Buses and trucks require significantly more time to stop compared to smaller vehicles, which means that maintaining a greater following distance provides drivers with adequate time to react to sudden stops or emergencies.

Additionally, a five-second following distance allows for improved visibility of the road ahead, especially for drivers in smaller vehicles who may be trailing behind. This practice enhances overall road safety by reducing the likelihood of rear-end collisions, particularly in adverse weather conditions or heavy traffic scenarios where stopping distances can become unpredictable. Furthermore, the larger dimensions of buses and trucks make it crucial to account for longer stopping distances, ensuring that there is enough space to safely navigate potential hazards.

The other options suggest shorter following distances that may not provide sufficient safety margins for the unique handling and braking dynamics of larger vehicles. Thus, adopting the five-second rule reflects best practices in defensive driving and aligns with safety recommendations for commercial vehicle operation.