Are you over the limit?
We could soon be finding out if having one drink with our pub meal will push us over the dink-drive limit.
Two West Country brothers have started a trial of a bar-top breathalising machine.
It has been put into a pub in Bristol and is successful could soon be popping up in bars and pubs across the country.
Jack and Oliver Chatham also hope to put them up in car parks and airports in the future.
The brothers told Heart they discovered the idea abroad:
The advice from Avon and Somerset police is to take a zero tolerance stance and not to drink any alcohol if you are driving.
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