Motorists should be wary of the risk of icy stretches on untreated surfaces this morning.
Wintry showers brought falls of snow on higher ground during the night.
Tonight will be largely cloudy and breezy with further wintry showers, again predominantly over high ground.
Temperatures will fall close to freezing.
There is disruption on the M62 after a Ford Fiesta between J22 Ripponden and J23 Outlane eastbound broke down before 8 am.
Also, there is queueing traffic westbound between J24 Ainley Top and J18 Simister Island.
The A644 around Brighouse is partially blocked due to an accident.
A replacement bus service is running on Northern Rail between Hebden Bridge and Burnley Manchester Road due to engineering works.