A raft of new road rules came into effect yesterday.
Among the new laws, police can now ask you to walk in a line to test you for drugs and motorbikes have to drive with their lights on during the day.
But the law that will cause the biggest behavioural shift is cellphones in cars.
As of November 1, it is illegal to text while driving and to talk on your phone you must have a hands-free kit.
Campbell Live reporters were out in Auckland, Wellington and Dunedin today to see whether New Zealanders are obeying the new laws.