A spotter is a person used in vehicle maneuvers to assist a driver who may not have a clear view in their direction of travel.[1][2] They are most commonly used in:
The spotter's advantage is the ability to move around the load or vehicle to determine the best trajectory.
A spotter will either use a set of standard hand signals, or will agree hand signals before the maneuver with the driver or operator.[3]
Technological solutions such as reversing cameras and proximity sensors have reduced drivers' reliance on spotters in some circumstances.