What is the proper action to take if the vehicle behind you wishes to pass?

When a vehicle behind you intends to pass, moving as far to the left of the road as possible is the appropriate action to take. This maneuver creates a safer environment for the vehicle attempting to overtake you, giving them the necessary space to do so with minimal risk. It allows for a clear pathway for the passing vehicle, which helps in reducing the likelihood of an accident.

Staying to the left also signals to the driver behind you that you are aware of their intention and are facilitating their movement. This is particularly important on roads where there may not be a designated passing lane, as it promotes a smoother flow of traffic.

Maintaining your speed or attempting to speed up would not provide the needed space for the other vehicle to pass safely, and waving them on might cause confusion or misinterpretation of your intentions. In essence, shifting to the left is the most responsible action that prioritizes safety and effective traffic management.