A 31-year-old Mawson woman has been charged after a road rage incident where she allegedly assaulted a male driver, pulling him from his vehicle while punching and spitting on him.

She is alleged to have then taken his car keys and thrown them away before leaving the scene.

Police say that on Sunday morning, the man in a silver Mitsubishi Outlander was driving along Horse Park Drive in Amaroo when the driver of a silver Ford Mondeo became agitated when he stopped at a red light.

He was overtaken by the Ford and the female driver then allegedly started driving in an erratic manner, speeding up and slowing down while she was in front of him.

While stopped at another set of traffic lights, the woman got out of her car and allegedly assaulted the man.

She has been charged with assault occasioning actual bodily harm and driving while suspended.