Experts have given tips on how motorists can stay safe if they are caught up in the snow.
Drivers are advised to remain in their vehicles and keep the engine running, as abandoning the car can put people at risk and slow down the clearance effort.
On the A39 in Cornwall, gritter trucks have been working to clear the snow and leaving a vehicle unattended can hinder their progress.
If you are stuck in traffic due to the snow, thank you for your patience. Emergency Services are working hard to clear roads and get traffic moving. Please stay in your vehicles and keep warm. Do not abandon vehicles as this slows down the clearance effort and puts you at risk.
— DevonCornwall Police (@DC_Police) January 31, 2019
Motorists are also urged to keep the car’s wheels straight and avoid wheel spin, and to use a shovel or any other object to dig out snow from underneath the tyres.
Other general tips include running the car for 10 minutes every hour to ensure the engine stays warm.
It is also advisable for drivers to contact family members so they know what has happened and contact breakdown cover providers.