Video: Watch motorcyclist punch driver's windscreen in foul mouthed attack

This is the moment an enraged motorcyclist climbs on to a bonnet of a BMW to punch the windscreen as he unleashed a foul mouthed tirade at a motorist in front of stunned witnesses.

Footage of the incident was captured yesterday during afternoon rush-hour traffic near the Waterloo 'Imax' roundabout after the motorcyclist confronted the driver to accuse them of getting too close to him in traffic.

According to witnesses, the first punches were thrown from his motorbike before he got off to continue the attack.

In the clip, he is heard to say: "You're trying to be clever and you trapped the leg against my bike so I couldn't move forward if I wanted to...f****** k*** f*** off."