How long should the brake application last when slowing down?

The correct answer indicates that the brake application should last approximately three seconds when slowing down. This timeframe is generally recommended to ensure a smooth and gradual reduction in speed, which contributes to safety. A three-second application allows for proper deceleration without causing abrupt changes that could lead to loss of control, particularly in larger vehicles.

This gradual braking technique helps maintain stability and allows other drivers to react appropriately to the vehicle's speed change. In contrast, longer durations, such as five or ten seconds, may be too long for normal circumstances, potentially causing interruptions in traffic flow or leading to unintentional stops. Additionally, stating "no specific time" could lead to inconsistency and misuse of braking procedures, compromising safety. Therefore, the three-second guideline serves as an effective and practical standard for slowing down in a controlled manner.