Humber region drivers warned of snow disruption
Heavy snowfall has affected roads, flights and schools in East Yorkshire and northern Lincolnshire.
A Met Office yellow warning remains in place for the region, with several schools closed.
Some roads were described as treacherous by drivers. Humberside Police advised motorists to be cautious on the roads.
East Riding of Yorkshire Council said gritters had been operating around the clock.
PC Barry Gardner, from Humberside Police, said he had seen a number of motorists driving without lights and urged drivers to "leave plenty of room between yourself and the vehicle in front".
The Yorkshire Ambulance Service said it was expecting to see a "marked increase in weather-related slips, trips and falls and road traffic collisions."
David Williams, deputy director of operations, said: "Our staff are working extremely hard to get to people who call upon us for help as quickly and as safely as possible but understandably hazardous driving conditions may lead to extended drive-times meaning it might take us a little longer than normal to reach patients in the worst-hit areas."
Humberside Airport said the weather conditions were affecting flights, and urged passengers to check with airlines before leaving.
Motorists have been warned of hazardous driving conditions on the A18 at Scunthorpe, the A164 at Beverley and the A1079 at Cherry Burton.
In Grimsby, firefighters were called to Gilbey Road on Sunday evening to put out a fire in the cab of a gritter lorry.
Humberside Fire and Rescue Service said the driver was given oxygen therapy but did not require hospital treatment.