A woman has died following a crash on State Highway 1, near Ohinewai in the Waikato.
Emergency services were called to the scene shortly after 1am on Monday.
"The vehicle collided with a barrier and came to rest on a rail line," a police statement said.
Police said the woman was taken to Waikato Hospital where she later died.
The north lanes through Huntly are currently closed.
"Rail services were expected to resume after 6am," police said.
There are delays and people need to allow for extra travel time, the NZ Transport Agency says.