The survey of 2,250 UK and Irish licence holders for uSwitch.com also revealed that only 39pc are aware they need a high-visibility jacket in their car when driving in France, while 78pc wrongly believe the UK has a lower drink-drive limit. Motorists in France are required to have a range of accessories, including a warning triangle, headlight converters, country sticker and reflective jacket. France also has a drink-drive limit of just 50mg of alcohol per 100ml of blood, compared to 80mg in the UK. Thousands of supporters from England, Wales, Northern Ireland and the Republic of Ireland will travel to France for the tournament, which begins on June 10. Rod Jones, insurance expert at uSwitch.com, said: With footie fans looking forward to making the short trip across the Channel this summer, its concerning that so many could be caught offside because of foreign road laws. It pays to check that your car insurance policy includes European cover. Many policies default to third-party only protection on the continent unless youve stipulated otherwise, so talk to your insurer if necessary. Breakdown cover is also worth checking the last thing you want is for your trip to stall on the way to the game.