A vehicle towing a trailer that stopped part way across Ngaruroro Bridge is believed to have been the catalyst in an "unusual" four car pile-up, which saw one woman taken to hospital.
Police Constable Mark Brinsdon understood the vehicle halted to "tie something on to the trailer" shortly before the crash, about 1pm yesterday.
He said a car following it stopped, while a "distracted" driver in a third vehicle hit the second in line, forcing it into the opposite lane, where it was struck by an oncoming vehicle heading north towards Napier.
"A four car pile-up is unusual," Mr Brinsdon said.
"All drivers were okay, bar one female."