Overseas drivers were involved in more than 400 crashes on New Zealand roads last year, and failure to keep left, poor handling and fatigue the leading causes of deadly crashes.

Fatal accidents, breakdowns and huge traffic backlogs have plagued the first four days of the official Christmas road toll period.

A motorist travelling at 135km/h in the central North Island is among bad drivers caught by a police "eye in the sky".

A second Mt Victoria tunnel could be the solution to Wellington's traffic congestion problems.

A tourist route where an American honeymooner died has been identified as one of the country's riskiest roads to drive on.

A multimillion-dollar advertising campaign aimed at reducing the number of fatigued drivers involved in serious or fatal crashes is failing to make any difference.

The country's top road policing officer says most drugged drivers are not being charged by police for that crime because they're also being caught drink driving.

Evening of darts turns to tragedy after pensioner struck by car.

The Rimutaka Hill Road has been closed this morning due to a spill. A police spokesperson said the spill, believed to be either diesel or oil, was reported about 6.30am.