A total of 5000 people were breathalysed last year

Organisers of the anti-drink campaign, which was unveiled in Cardiff on Thursday, warned that Wales' four police forces would be "tough" on anybody who did not get the message.

Also, police chiefs said more people were being shopped as the offence of driving over the limit becomes more socially unacceptable.

In Wales in 2002 there were 654 casualties and eight fatalities involved in accidents where there was at least one positive breath test.

Deputy Minister for Economic Development and Transport Dr Brian Gibbons said young people formed a significant part of those who drove under the influence of alcohol.

"We're targeting the young drivers who thinks they're superman and can avoid accidents," he said.

But he added that older drivers did not always get the message.

It (drinking and driving) is becoming socially unacceptable Steve Curtis

"They think that because they've got experience they can afford to take a risk," he added.

The bilingual drink-drive television commercial will focus on the excuses people give for drinking and driving - "I've only had a couple" to "I've had a big meal," to "I won't get stopped".

Last year 5,000 people were breathalysed across Wales over the Christmas period. Of those, 265 people were over the legal limit.

North Wales Assistant Chief Constable Steve Curtis said are likely to be helped by the fact that more people are reporting drink-drive offences to them.

The Welsh campaign also features a prize-winning poster designed by 13-year-old Rachel Mayers from Cefn Saeson Comprehensive School in Neath, showing a driver handing over his car keys.

She said she wanted young people to understand the dangers of drinking and driving.

"My slogan is give it up for Christmas.

"It feels great to have won but I hope the message gets across. I hope it stops people drinking and driving."