Motorists must reduce speed to avoid accidents in early morning ice, as morning temperatures plummet, layering the region's roads with a thick icy coating.

Police say two cars crashed on Pyes Pa Road, State Highway 36, early on Thursday, June 4.
The two vehicles, a light truck and heavy truck and trailer unit, crashed in separate incidents on the Tauranga side of the Mangorewa Gorge along SH 36. They were reported to police about 6.45am.
The light truck crashed 5km south of Williams Road towards Rotorua and the heavy truck and trailer unit crashed just before Te Matai Road.
There were no fatalities or serious injuries as a result of the accidents, which resulted in the heavy truck rolling on its side but the trailer remaining upright.
Police warned of continued ice along SH36 and cautioned motorists need to be cautious.
On Tuesday morning, June 2, two vehicles crashed on Pyes Pa Road, SH36, after hitting ice.
There were no fatalities or serious injuries from these accidents, but senior sergeant Ian Campion from the Western Bay of Plenty strategic traffic unit says motorists need to be aware of ice indicators on the road.
'It's really important to look out for those indicators. Ice is usually visible and the environment usually gives indicators, like frost on the side of the road or paddocks,” says Ian.
If motorists see ice they should slow down to a speed that enables them to have total control over the vehicle.
'If you break too hard you lose control. If you hit a patch of ice at speed it significantly increases the risk an accident,” says Ian.