Britain has one of the worst levels of drink-driving in Europe, a recent police crackdown across the continent revealed.
In a week-long campaign last month, police breathalysed nearly 14,000 drivers and found 829, or 6%, were over the limit.
Only the small countries of Switzerland and Moldova registered a higher proportion of drink-drivers - 6.6% and 19% respectively.
Deputy Chief Constable of North Yorkshire Police Adam Briggs, who is also president of road policing organisation Tispol which co-ordinated the campaign, said summer was now firmly established as a bigger drink-driving problem than Christmas.
He raised the prospect of a lower alcohol limit for motorists as a crisis measure to cut deaths on the roads.
Mr Briggs said: "We are determined to find a way forward to reduce this unacceptable level of hard-core drink drivers and to make the roads safer for everyone.
"There are a number of possibilities including reducing the legal limit, the introduction of random roadside testing, increasing the penalties or continuing to improve education."
A Department for Transport spokeswoman said a consultation on making it easier for police to tackle drink-driving is planned for later in the year.
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