The plates being sought are: TS5313, CFS154, GFM335, YA4583, HMU961 and GCR178. Winning drivers were required to bring the nominated vehicle to Northland Regional Council offices at 36 Water St, Whangarei. Unclaimed prizes expire on July 31.
A spokeswoman for the New Zealand Transport Agency said the organisations involved would be entitled to apply for the names and addresses of the vehicles' registered owners, but would have to make an application for each individual plate number, at a cost of $15 each.
The applications would then be considered under the Official Information Act. This requires NZTA to weigh up the public interest in releasing the information against the privacy rights of the individual.
Ms Archer said despite the current predicament, the programme had been well received in the community and was being recreated elsewhere in the country. It happened concurrently with a police crackdown on speeding.
"With the winter months upon us, there are fewer daylight hours, more rain and fog. It is a good time for people to be really thinking about speed and slowing down and driving to the conditions," she said.
-Visit northlandroadsafety.co.nz for more information.