During a road march, how should vehicles maintain a safe distance from each other?

Maintaining a safe distance between vehicles during a road march is vital to ensuring safety and operational efficiency. Adjusting the distance based on speed and conditions is crucial because the stopping distance of a vehicle increases with speed. Moreover, environmental factors such as road surface conditions, visibility, and weather can affect how quickly a vehicle can stop or maneuver, making it necessary to modify spacing accordingly.

If vehicles were to assume a fixed distance regardless of speed, they could create dangerous situations during rapid changes in speed or unexpected stops. Similarly, relying solely on visual signals from the lead vehicle may not account for all variables affecting vehicle spacing and could lead to misunderstandings or delays in reaction time. Maintaining close proximity may seem efficient but significantly reduces the safety margin required to avoid collisions or accidents, especially in adverse conditions. Therefore, adjusting the distance based on speed and external factors is the most appropriate approach for safe vehicle operation during a road march.