Road safety operations will be carried out through the end of May and into June as part of "Operation Twistlock," a trans-Tasman road safety initiative focusing on heavy vehicles.
Police and road safety agencies from Australia and New Zealand will focus on issues including vehicle safety, fatigue, speed, alcohol and drug use.
"We know that the majority of transport operators and drivers take their responsibilities seriously, but there are a few who don't, and it is those we will be targeting," said road police assistant commissioner Dave Cliff.
The operation is an extension of the normal work carried out by the police commercial vehicle investigation unit, with particular focus on major roading corridors where there is the greatest concentration of heavy vehicles flowing through.
One such area was Auckland, which had more trucks, buses and taxis than the rest of New Zealand combined.
