"In Auckland, near the harbour bridge, we stopped a driver that was travelling at 89km/h in a 80km/h zone. The driver was stopped and breath tested and found to be over the limit. It was their third drink-driving charge. So they had their licence suspended and their vehicle impounded.
"That was a really good indicator first off that drivers are ignoring the speed limit ... we will breath test you and if you are drink-driving, we will catch you."
However, the early word from traffic cops nationally was that most drivers were obeying the limit, he said.
To give the campaign further publicity, $350,000 of ACC money has also been pumped into a summer advertising campaign.
Radio adverts on national and regional airwaves kicked off on Sunday, Mr Cliff said, while billboards would begin popping up on major roads throughout the country in the next 7 to 10 days.
The signs feature roadside police officers with messages promoting lines such as, "Summer speeding will be stopped", "Anything over the limit is speeding", and, "The summer of no speed tolerance".
The December-January period traditionally has a higher road toll than other times of the year.
Last summer there were 346 crashes causing 57 fatalities.