This is the terrifying moment a crazed pedestrian ran up to a car being driven by a learner driver and started repeatedly HEADBUTTING the windscreen.

Mitchell Bryan, 18, was driving down a residential street during a mock test when a topless attacker ran into the road and launched himself onto the bonnet.

After sliding part way down the roof, he smashed his head into the windscreen while shouting abuse at the young motorist and instructor Sharon Hopkinson, 57.

Sharon then told Mitchell to drive on but to the pair’s horror, the ranting thug chased after them while they were stuck at a red light.

Luckily, the traffic lights turned green before he arrived and they were able to drive away to a police station to report the frightening incident.