
Directional stability during vehicle braking refers to the performance where the vehicle does not experience deviation, sideslip, or loss of steering capability while braking. Vehicle Deviation: When a vehicle is driving straight on a flat road, it may spontaneously veer to one side, causing the centerline connecting the front and rear axles to misalign with the centerline of the driving trajectory. Minor deviation can lead to tire wear or even tire failure, while severe cases may result in dangerous situations such as tire blowouts or loss of vehicle control. Vehicle Sideslip: Sideslip occurs when a moving vehicle experiences lateral movement of one or both axles' wheels due to braking, rotational inertia, or other factors. There are three types of sideslip: four-wheel sideslip, front-wheel sideslip, and rear-wheel sideslip. Sideslip, especially rear-wheel sideslip, poses a significant threat to driving safety and often leads to severe traffic accidents such as collisions, rollovers, or running off the road.


