Why would a AWD car also have traction control?

all traction control does is slow your motor down when a wheel starts to spin and wont alow you to keep giving it gas to spin out of control While AWD can help you keep from slipping and will help you keep control in ice and snow, remember that you can still slip. Traction control briefly shuts down the engine when you start to slip so that you don't loose control of the vehicle. Both features are useful in bad road conditions. Actually Traction Control uses the throttle and the brakes to compensate for wheel spin.