If you drive a bus or truck and trailer that is 48 feet, what is the correct following distance?

When driving a bus or a truck with a trailer that is 48 feet long, the recommended following distance is 5 seconds. This longer following distance is critical for larger vehicles because they have more mass and require a longer distance to come to a complete stop, compared to standard passenger vehicles.

Maintaining a 5-second following distance allows the driver adequate time to react to sudden stops or emergencies that may occur ahead. This practice enhances safety not only for the driver of the larger vehicle but also for other road users, as it reduces the risk of collisions resulting from insufficient stopping distance.

In contrast, shorter following distances, such as 3 seconds, 4 seconds, or 6 seconds, may not provide sufficient time for safe stopping in emergencies, especially given the size of the vehicle and the dynamics involved in stopping a heavier load. The 5-second rule thus supports a balance of safety and practicality for drivers of larger commercial vehicles.