The difference between the 3-channel and 4-channel of the anti-lock braking system
The difference in the main speed
4 channel is more advanced, better, but should be more expensive. Now the car is basically 4 channel.
One of the three channels of the channel controls two front wheels, and the latter two wheels have the remaining two channel controls. The four-channel is that each wheel has an independent hydraulic line control. More accurate, but also control the attitude of the car.
