A truck fire has closed the southbound lanes on the Waikato Expressway just south of Rangiriri.
Fire and Emergency NZ said it was called at 5.57am after a large truck and trailer unit caught fire 3km south of Rangiriri.
The driver was unhurt and the cause of the fire is unknown, but police said at 7.20am that it was likely to take one to two hours to clear the southbound lanes.
Diversions are in place.