What is the definition of traction in the context of vehicle operation?

Traction refers to the frictional force that allows the vehicle's tires to grip the surface of the road. This force is crucial for the safe operation of a vehicle, as it enables acceleration, braking, and cornering without slipping. When tires have good traction, they maintain optimal contact with the road, allowing for better control and stability.

In vehicle operation, adequate traction is essential for safe driving, especially in varying weather conditions like rain or snow, where the road surface may be slick. The term underscores the importance of tire design, tread patterns, and appropriate tire pressure, all of which contribute to maximizing contact and grip with the road. On the other hand, the other options do not accurately represent the concept of traction; a farm machine is unrelated to this specific definition, while a steering mechanism pertains to directional control rather than the frictional aspect of tire-road interaction.