Scots are the most hot-headed drivers, with Northern Ireland motorists the least likely to lose their cool, according to a survey.
As many as 47% of Scottish drivers are likely to get angry if stuck in a traffic jam, with 87% admitting to having sworn at another motorist, the poll from sat nav maker Navigon showed.
Almost 10% of Scots also said they got annoyed if a passenger talked to them in the car.
Northern Irish drivers appeared the happiest of road users, with 50% rarely getting angry behind the wheel and more than a third taking chill-out CDs to listen to on journeys.
Drivers in Yorkshire seemed to be the most confident, with more than 40% claiming never to get lost on road trips.
The poll also found that 60% of Londoners would like to see less traffic on the road.
Navigon's UK manager Peter Blampied said: “Driving any distance, particularly in bad weather, can be challenging.
“We hope this research will make drivers be more aware of other people's attitudes when taking to the road, especially in bad conditions.”