The main resistive force that opposes the driving force when a vehicle is moving is called rolling resistance. This force primarily arises due to the deformation of the vehicle's tires and the road surface as the wheels roll. Rolling resistance is influenced by factors such as the load on each wheel, the type of tire tread, tire inflation pressure, and the nature of the road surface. It acts to oppose the vehicle's motion and must be overcome by the driving force to keep the vehicle moving or accelerating. Alongside rolling resistance, air resistance (drag) also significantly opposes the motion, especially at higher speeds, but rolling resistance is the primary resistive force related to the tires' interaction with the road.