Christchurch police have arrested 30 boyracers who were part of a large disorderly gathering in the north of the city.

A decorated policeman who played a key role in putting RSA triple-murderer William Bell behind bars was let off after pleading guilty to drink-driving.

Shocked education officials are surprised police won't put more effort into catching bus drivers who speed through special 40km/h zones.

Two pilots used their airside security passes to sneak onto Queenstown Airport runway in the middle of the night to race a car.