Animated messages will be flashed to all bluetooth-enabled phones in target areas at key times, warning motorists of the dangers of drink-driving.

“The messages will be generated by bluetooth equipment in police patrol cars and will tell drivers that they run a very real risk of being breathalysed when they leave pubs, clubs and parties,” said a North Yorkshire police spokesman.

Over the past three years 176 people have been either killed or seriously injured in drink-related accidents on the county’s roads.

Chris Anderson, chairman of the 95 Alive partnership which organised the campaign, said: “The festive period is a critical time for road safety with office parties parties and other social gatherings offering increased opportunities and added temptation to drivers.

“By using this bluetooth technology, we will be able to get the safety message across to people at the moment when it matters the most – when they are in convivial surroundings and might otherwise be tempted to risk taking a chance.”