Cheeky air travellers have found a way to bend the rules by using self-service kiosks in domestic terminals.

Taxi operators are being offered a sound "barrier" so intolerable to the ear that its promoter is confident it will neutralise any attacker.

By Sunday afternoon last Queen's Birthday Weekend, nine people had died on the roads but police believe drivers are abiding by the rules this year.

Police plan to crack down on speeding motorists doing as little as 4km over the limit this weekend.

Holidaymakers making an early break out of Auckland this afternoon face added disruption on the main road north, from opponents of the Super City.

Air NZ says reports one of its planes was on a collision course with another aircraft are nothing more than "sensationalist" media coverage.

An investigation has begun into why a Virgin Australia Boeing 777 and an Air New Zealand 767 were on a collision course in Fiji air space last month.

Two cars belonging to one person have made almost 700 trips on the Northern Gateway motorway without paying the $2-a-trip toll - and the owner now faces fines of more than $26,000 if the fees are not paid.

Transport Minister Steven Joyce says the number of drivers found with drugs in their bloodstream show the law is working as intended.

John Key's national cycleway has hit a bumpy patch, with only about 10km constructed from the $50m fund set up for the project.