What action should a driver take when being passed by a smaller vehicle?

When being passed by a smaller vehicle, the appropriate action for a driver is to reduce speed to help the other driver pass safely. This action allows the smaller vehicle to maneuver into the driver's lane without difficulty, providing a safety margin that minimizes the risk of collisions. By slowing down slightly, the driver ensures that there is enough space between their vehicle and the one attempting to pass, allowing for a smooth and safe transition.

This approach promotes safer driving behavior and contributes to overall roadway safety by reducing the stress and risk for the driver in the passing vehicle. It is particularly important in situations where there may be limited visibility or space to safely execute the passing maneuver.