Police in Fenland are seeking the public’s help to catch people who drive after using alcohol or drugs this summer.
The plea has been made as part of a nationwide campaign, which the Cambridgeshire force is participating in throughout June and July.
Last year, the law was changed to make it easier for motorists to be prosecuted for driving while under the influence of drugs, including both illegal and prescription substances.
Roadside testing kits were also introduced.
But Insp Phil Bloor, of Cambridgeshire Police said: “Sadly there are still people who think it is acceptable to drive under the influence of drink or drugs.
“They risk not only their own lives but also those of any passengers and other road users.
“We will often pull over a driver over the limit who, despite being over the legal limit, believed they were still fit for driving.
“This is never the case. Alcohol or drugs will always affect your driving for the worse and although it may give use a feeling of overconfidence the truth is your reactions are slower and you are a danger on the roads.
“People may have concerns about someone they know who may be drink driving or notice someone who regularly drives their vehicle home from the pub despite having several drinks.
“We are asking people to help us make the roads a safer place for everyone and reporting any drink or drug driving concerns on our confidential reporting line.”
A total of 860 people were arrested across Cambridgeshire on suspicion of driving under the influence of drink and drugs.
And stop checks will be carried out around the county during this summer’s initiative.
Anyone who suspects a driver of being behind the wheel while under the influence of drink or drugs is asked to phone the force’s 24-hour confidential reporting line on 0800 0320845.