Hazardous driving conditions across West Yorkshire
Motorists have been warned to take care on roads across West Yorkshire due to icy conditions.
The Met Office predicted between 2-5cm of snow across the county overnight into Friday morning, with as much as 10cm in isolated areas.
Some passengers experienced delays at Leeds Bradford Airport due to the adverse conditions on Thursday evening.
West Yorkshire Police urged motorists to make sure their vehicles were "winter ready" before heading out.
Mark Milsom, Assistant Chief Constable of West Yorkshire Police, said: "We've seen a couple of hard winters and that severe weather creates an increased demand on all agencies, including police, council and health.
"While some of that is due to the unavoidable, such as road crashes and people being taken ill, there are precautions people can take now to reduce the risks.
"Bad weather always stretches our resources and while we can cope, response times for the emergency services for example can be reduced, if only because it is more difficult for us to get around too."
Tony Reeve, chief executive of Bradford Council, said: "We have substantial stocks of grit and have well-developed plans to deal with the snow and ice.
"We will always strive to keep the major commuter network open but people must be aware that very heavy snowfall can easily create circumstances that result in widespread disruption."