What is the recommended following distance for drivers of large vehicles like buses and trucks at highway speeds?

The recommended following distance for drivers of large vehicles, such as buses and trucks, at highway speeds is at least five seconds. This extended following distance is essential for several reasons.

Large vehicles typically have much greater mass than passenger cars, which means they require more time and distance to come to a complete stop. A five-second gap allows the driver sufficient time to react to sudden changes in traffic conditions, such as the vehicles in front slowing down or stopping unexpectedly. This margin is crucial not only for the driver's safety but also for the safety of other road users, as larger vehicles may have longer stopping distances due to their weight and size.

Additionally, maintaining a five-second following distance provides better visibility of the road ahead. It allows the driver to anticipate potential hazards, such as vehicles merging or roadside incidents that may not be immediately visible if they are too close to the vehicle ahead. Overall, this practice enhances not only the driver's safety but also improves traffic flow on highways where larger vehicles operate.