It's been another chilly night across the country and drivers are being warned to take care, with ice and black ice affecting many roads.
Snow and ice warnings remain in place for State Highways in the central North Island on Monday morning, but all main routes are open.
The Rimutaka Hill road is also open, but there is ice around and caution is advised.
Adverse weather conditions suspended train services on the line between Johnsonville and Wellington and caused delays on other lines.
Further south, drivers in Otago and Canterbury are being urged to take extra care in the icy conditions and allow more time to get to their destination.