One person has suffered serious injuries after crashing a vehicle towing an empty horse float on State Highway 5 near Iwitahi.
The vehicle crashed into a bank around 1.30pm and emergency services have closed one lane of the highway.
NZTA says a stop/go system is in place with motorists travelling between Taupō and Napier asked to slow down and expect delays.
North of Auckland, highway traffic between Wellsford and Warkworth has eased following a crash earlier this afternoon.
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There are multiple roadwork sites throughout the Dome Valley, however, with road users asked to take extra care in the area.
NZTA has asked motorists to follow the directions of emergency services on scene.
The holiday road toll, which ended at 6am this morning, finished at 11 - seven more than the same period last year.