Four vehicles slid off the State Highway 3 near Egmont Village yesterday after a school bus broke down and leaked oil over the road.
Police said at 7.55am one car skidded off the road into a flax bush before two others, slowing down quickly after seeing the first car, crashed nose-to-tail.
The fourth slithered off the road while trying to stop to help.
Senior Constable Phillip Rowe said the female driver of the first car had been cleared by St John paramedics and nobody else had been injured though the vehicles involved in the nose-to-tail had suffered some damage.
The road was also icy, but Mr Rowe said motorists were taking care and the traffic was moving at about 80kmh, but braking as they came over the hill.
Mr Rowe said the bus had stopped to pick up children near the intersection of State Highway Three and Upland Rd when the driver discovered the bus had lost power, had been leaking oil and could not move.
It is understood another bus arrived to transport the children to school.
The Taranaki Daily News could not contact the bus company, Tranzit, for comment yesterday.
One lane of the road was closed while contractors covered the 1km oil spill with grit.
- Taranaki Daily News
Should NPDC sell its Tasman farms?Related story: Tasman farms in black