What is the difference between with ABS and without ABS?

[DelJames]

The difference between with ABS and without ABS lies in the condition of the wheels during braking: with ABS, the wheels do not lock up during emergency braking; without ABS, the wheels will lock up during emergency braking. The functions of ABS are: 1. To maximize the effectiveness of the brakes, reducing braking time and distance; 2. To prevent vehicle skidding and fishtailing during emergency braking, ensuring good driving stability; 3. To maintain good steering control when turning during emergency braking. During braking, ABS quickly determines the locking state of each wheel based on speed signals from the wheel speed sensors. It closes the normally open input solenoid valve for the wheel that is beginning to lock, keeping the braking force constant. If the wheel continues to lock, the normally closed output solenoid valve is opened, causing the braking pressure on that wheel to drop rapidly due to the direct connection to the brake fluid reservoir, preventing the wheel from fully locking due to excessive braking force.