A series of crashes throughout the region over the weekend has sparked a warning from police for people to drive to the conditions.
Senior Constable Regan Framp said police attended a number of crashes - including a two-vehicle collision on Te Ngae Rd about 3pm on Saturday.
He said there were no injuries.
"Any crash you walk out of is lucky. It doesn't take a big crash to sustain injuries," Mr Framp added.
Later on Saturday night a car crashed off the Waiteti Stream Bridge off Ranginui St, near Ngongotaha.
A police spokeswoman said the two people in the car had left the scene, so there was no record of any injuries.A police spokesperson said they were still investigating.
About 4am yesterday a 19-year-old Tokoroa man was flown to Waikato Hospital with serious head injuries after his car hit a power pole on State Highway 1 at Lichfield.
Fire and ambulance staff had to secure the downed wires before freeing the driver from his car.
A police spokeswoman said it was unclear what caused the crash but the serious crash unit was investigating.
Mr Framp said people needed to be cautious on the roads, especially in winter.
"Our focus, currently in the winter months, is always driving to the conditions.
"If something occurs in front of you make sure you have enough time to stop.
"Look out for ice and keep the speed down.
"Restraint is really important. Keep seatbelts done up because they do save lives."