Cumbria Constabulary is urging drivers to think before drinking or taking drugs and getting behind the wheel. Over the weekend, a number of breath tests have been carried out.
A spokesperson from Cumbria Police said: "Over Friday, Saturday and Sunday we conducted 70 breath tests between 2100 and 0700 in the Copeland area.
"Four were positive and three people have been charged. One blew under in custody."
With the Christmas party season approaching, officers are keen to spell out the dangers and consequences of drink and drug-driving.
Officers can test for cannabis and cocaine at the roadside, and screen for other drugs, including ecstasy, LSD, ketamine and heroin at the police station.
The spokesperson added: “People need to plan their evening. If you’re thinking of having a drink then you should make plans for how you are going to get home safely before even set foot out of the door.
“If you’re getting a lift from someone else, ask yourself if they’ve had a drink. Getting into a car driven by a drink driver is putting your own life in serious danger.”