Police are urging extreme caution to Wanaka motorists this morning due to black ice in the area. 

State Highway 33 is blocked at Paengaroa after a truck and trailer unit rolled this morning. 

The crash was reported about 5am, at the intersection of Allport Road. 

Diversions are being put in place after a serious crash involving a bus and car on Crown Range Road this morning. 

The crash happened south of Cardrona, about 10.15am.