Quad bike grits Cambridge's icy paths
Gritters are continuing to treat roads in Cambridgeshire as the cold snap continues and some schools decide to close.
Cambridgeshire County Council extended its warning to drivers to be aware of the icy conditions as temperatures plunged to -4C (25F) overnight.
It said a quad bike had been sent out to treat paths and cycle ways in Cambridge from 1900 GMT on Wednesday.
Three schools have announced they will be shut on Thursday.
The ambulance service said it had answered a huge volume of calls from elderly people.
A spokesman said paramedics have been treating older people for a variety of respiratory conditions brought on by the cold weather.
Cambridge Dial-a-Ride, a transport service for the physically impaired, has taken numerous cancellations this week because people are too worried about injury to leave home.
The Met Office said Thursday will be windy and bitterly cold and mostly dry at first, but further snow showers could develop by the afternoon.