West Yorkshire Police is urging the public to "dob in a drink driver" in the run-up to Christmas.
The force is stepping up action to curb problems associated with people getting behind the wheel under the influence of alcohol and drugs during the festive season as it does each year.
Last December, 183 people were charged for drink and drug driving related offences, 70 of which were in Leeds, and carried out 1,273 roadside breath tests.
Now police are asking the public to contact them to report culprits.
Insp Joanne Field, who leads West Yorkshire Police's roads policing unit, said: ‘‘Driving while under the influence of drink or drugs is always a significant danger, but at Christmas the risks are even more prevalent with darker nights, bad weather and, sadly, more people taking the risk by drinking or using drugs and then getting behind the wheel.
"We're asking people to consider the real impact of those they see or know regularly drinks or uses drugs before driving and have made it easier than ever to dob in a driver.
Penalties for driving under the influence of drink and drugs include a minimum one-year ban and a fine of up to £5,000.
‘‘The effect of a drink driving conviction can be devastating. In my time as an officer, I have seen people lose their job, career and relationships. If you're going out to drink any amount please leave your car keys at home. It's simply not worth the risk.’’ added Insp Field.
"The number of drink driving charges is decreasing nationally which is a step in the right direction. While we would like to think that this is because people are more aware of the dangers of getting behind the wheel after a few drinks, the reality is that the decline is small and there are still plenty of people out there willing to take the risk."
Assistant Chief Constable Mark Milsom added: ‘‘During the last two years the largest number of arrests for drink and drug-driving offences have been among men and women aged 25 to 34. This is a generation of people that have grown up with the current drink driving laws and it's a very concerning trend.
‘‘It's vitally important these people, many of which will be forging their careers and who may have a young family, realise the life-limiting consequences associated with a drink or drug driving conviction."
To report a drink driver call 101.