This is the shocking moment motorcycle riders had a road rage brawl in front of passing drivers on the Thai holiday island of Phuket.

Footage shows a pillion passenger arguing with a helmeted motorcyclist over a traffic dispute near a school on January 6.

The row grew heated before the helmetless passenger knocked the other man down with a blow to the face.

The alleged attacker was seen fleeing as onlookers rushed to the rider's aid.

Road rage is a common problem in Thailand, where aggressive driving and a lack of enforcement often lead to violent confrontations on the roads.

Thailand has one of the world's worst road safety records. Ministers have set the goal of reducing fatalities from 32.7 deaths per 100,000 people to 12 per 100,000 people by the year 2027.