CENTRAL Scotland Police is urging motorists to stay at home unless their journey is of the utmost urgency.
Further heavy and sudden snow-fall over the last few hours, has led to traffic on many roads across the region being brought to a stand-still.
Motorways are badly affected, particularly the M80 and M876.
Efforts are being made by police and local authorities to clear the roads at the earliest possible opportunity.
Head of Road Policing, Chief Inspector Donald McMillan, said: "Many roads across the Forth Valley are becoming jammed with motorists stuck in the snow.
"We are making every effort to free them and clear the road ways.
"I would ask motorists who find themselves in this position to stay with their vehicles so we can assist them when we reach them.
"Officers in four-wheel-drive vehicles are out across the region helping stranded motorists.
"It's important that we keep the roads as clear of vehicles as possible - abandoned vehicles are causing jams and preventing gritters and emergency service vehicles from getting through."