The New Zealand Transport Agency is taking over control of what's become the Kaikoura Emergency Access Road along the old State Highway 70.
Restricted travel starts this morning and will last the next two weeks.
Light vehicles will be able to travel into Kaikoura from 8am to 10am, and out of Kaikoura from 2pm to 4pm today.
The route is scheduled to open at the same times tomorrow for heavy vehicles and four-wheel drives, and again on Friday for light vehicles.