A logging truck driver stopped by police for speeding was breath tested and found to be nearly double the legal alcohol limit for driving.
The incident has shocked senior police and trucking industry representatives, who say they take a zero tolerance approach to impaired driving.
The northbound truck driver was stopped on State Highway 1, near Mata south of Whangarei, about 5.15pm on Saturday.
Highway patrol Sergeant Chris Goodall said the truck driver was travelling at 100km/h and the maximum speed limit for heavy vehicles was 90km/h.
The truck did not have any logs but the trailer was being piggy-backed behind the truck cab.