Aggressive behaviour is widespread on Australian roads, with 70 per cent of drivers admitting to sounding their horns in anger and almost 20 per cent chasing another motorist, according to a survey.

Men aged 22 to 39 were most likely to commit extreme acts of road rage, the research by Monash University Accident Research Centre has found.

Aggressive driving has been linked to an increased risk of crashes, and drivers who admitted to being threatening on the roads were more likely to speed, drink-drive or use hand-held mobiles.

Study co-author Amanda Stephens said almost 3000 drivers nationally were questioned, with most admitting to sounding their horns or “expressing” annoyance when they were angry, while others tailgated or chased motorists.

Dr Stephens presented the study at the Australasian Road Safety Conference yesterday, stressing the importance of cutting aggressive driving to improve road safety.

WA Police analyst Stephen Temby discussed his research into the effect of seizing vehicles from people with no authority to drive.

Mr Temby said after the laws were brought in, there was a fall in the number of people caught flouting driving bans, supporting the idea that they were a deterrent.

He said it was important police kept targeting unlicensed drivers because they were usually banned for a “fairly serious offence pattern of behaviour”.