More than 100 people were arrested during a month-long police drink drive campaign in Cambridgeshire.
The campaign, which ran through June, saw 112 arrests on suspicion of driving under the influence of drink or drugs, compared to 97 for the same period last year.
At least 5,900 motorists were stopped as part of the crackdown.
At least five of the arrests resulted from calls to the confidential number for the public. Since June 1, the number was called 49 times and officers are also pulling together intelligence packages following other information given on the line.
Inspector Mark Rogers said: “It is always disappointing to see that people are continuing to break the law by drinking and driving. However, it is encouraging to see so many members of the public getting behind the campaign and calling the confidential line.
“Not only has this led to a number of arrests but we are also making enquiries into named drivers to ensure we know where they are next time they decide to get behind the wheel and break the law.
“The national enforcement campaign may be over but our work is not and we will continue to target those who think it’s acceptable to drive while under the influence.”
Using the 0800 032 0845 number, which is available 24/7, people can get involved in the campaign by supplying police with information about drink and drug drivers.