Traffic on State Highway 1 near Brynderwyn in Northland has ground to a halt after a truck caught fire on the road.
Smoke can be seen billowing into the sky from the truck, with Fire and Emergency New Zealand crews in attendance.
A section of bush above the truck also appears to be on fire.
A member of the public said traffic has stopped in both directions on the road and two fire engines are on site.
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The truck is parked on the road and is blocking lanes to the southern end of the Brunderwyn hill, prior to the SH12 turnoff.
Emergency services are on-site and are working to set up detours to avoid the incident, the NZ Transport Agencey reports.
Motorists are being told to expect delays and avoid the area if possible.