What does increased driving resistance mean?

[StColeman]

The driving resistance of a car includes four parts: the rolling resistance between the tires and the ground, air resistance, gradient resistance, and acceleration resistance. In other words, these are the factors that affect the speed of the car while driving. Increased friction affects the engine's power output, causing excessive pressure. The related introduction is as follows: 1. Gradient resistance: When a car travels at a constant speed on a horizontal road, it must overcome the rolling resistance from the ground and the air resistance from the atmosphere. When the car travels uphill on a slope, it must also overcome the component of gravity along the slope, which is called gradient resistance. When the car accelerates, it also needs to overcome acceleration resistance. Rolling resistance and air resistance exist under any driving conditions, while gradient resistance and acceleration resistance only exist under certain driving conditions. There is no gradient resistance or acceleration resistance when driving at a constant speed on a horizontal road. 2. Rolling resistance: When the wheels roll, the contact area between the tires and the road surface generates normal and tangential interaction forces, as well as corresponding deformation of the tires and the supporting road surface. The relative stiffness of the tires and the supporting surface determines the characteristics of the deformation. When elastic tires roll on hard road surfaces (concrete roads, asphalt roads), the deformation of the tires is the main factor. At this time, due to the internal friction of the tires, elastic hysteresis loss occurs, and the work done to deform the tires cannot be fully recovered. It is this elastic hysteresis loss of the tires that causes rolling resistance.