Alcohol and drug education specialist Avoidd has launched a service on its website that allows fleets to update their policies before the arrival of summer.
Roger Singer, head of Avoidd – Training & Education, said the number of drink-drive convictions was higher in the summer than during Christmas and new year.
He said: 'This is because we do more planned things around Christmas, going to relations for Boxing Day, or the firm's do in mid-December.
'We plan these events by staying over or taking a taxi. But in the summer there are impromptu events like barbecues. We consume more units over a longer period, so may feel less drunk, but we are more likely to be over the limit without realising it, or as we drink more, care less whether we are or not.'
Singer said it was vital with forthcoming health and safety legislation that fleets bring their own policies up to date. They can do this online using www.drinkdrive.co.uk/policyquest.htm
Singer added: 'With changes in the way the health and safety legislation is being applied, it is no longer good enough simply to say 'don't drink-drive'. You must show that you have educated drivers in how not to drive with alcohol or drugs in their bodies.'
Avoidd runs regular sessions to educate fleets about this.