What is the required distance to stop behind another vehicle?

The required distance to stop behind another vehicle is crucial for ensuring safety on the road. A distance of 10 feet is recommended because it provides enough space to react in case the vehicle in front suddenly stops. This distance allows for adequate visibility and reduces the chances of a rear-end collision, giving the driver an opportunity to assess the traffic conditions and respond appropriately. Keeping this distance also ensures that if the vehicle ahead begins to roll back (in situations such as on a hill), the driver behind has enough room to maneuver safely without risking an accident.

In contrast, shorter distances, such as 5 feet, may not provide sufficient space for reaction, particularly in unpredictable traffic situations. Distances like 15 feet or 20 feet might be overly cautious in typical driving scenarios, which could be impractical for maintaining a smooth flow of traffic. Hence, the choice of 10 feet strikes a balance between safety and practicality.