London is home to the angriest drivers in the UK, while those in the North of England are the least likely to experience road rage, it has been suggested.
New research reveals that 63% of motorists in the capital confess that getting behind the wheel makes them more aggressive and angry, sometimes to the point of abusing other road users.
In comparison, however, only 17% of drivers in the North of England experience bouts of road anger, followed by 19% in the Scottish Highlands.
Traffic jams (45%), cyclists and pedestrians (34%) and waiting at traffic lights and junctions (33%) are the most common triggers for bad moods on the roads in London.
Poor parking (22%), slow drivers (17%) and school run parents (12%) were also cited by drivers in other parks of the UK as reasons behind road rage.
RAC spokesman Simon Williams said: "The stress of driving in London, what with congestion and everyone desperately trying to get where they need to the quickest possible time, is a recipe for road rage.
"Research from the RAC Report on Motoring 2013 found most motorists thought that overall driving standards have slipped in the last five years with two thirds (65%) believing that anti-social behaviour, including road rage, is actually becoming more common. Sixty-two per cent felt the courtesy of other drivers has gone downhill."
The RAC research highlighted five main causes of driver stress; with mobile phone use and failure to signal clearly proving the biggest bugbears.
Around three-quarters of respondents cited tailgating as the most infuriating habit, with overtaking and other forms of aggressive driving also featuring prominently.
The new report, from ColinAppleyard.com, notes: "All drivers are in charge of a machine that weighs as much as two tonnes. You've got a duty of care to operate it safely and you can't do that when you're angry."
Motorists who get angry behind the wheel flash their lights at other road users in an aggressive manner (60%), sound the horn (45%), make rude hand gestures (31%), shout (23%) and even get involved in physical confrontations (1%).
Copyright Press Association 2014