Prime Minister David Cameron insisted the Government was “totally focused” on solving the snow chaos during a visit to Birmingham.
Mr Cameron met front line staff at the Highways Agency’s £160 million National Traffic Control Centre at Quinton Business Park.
Speaking in front of a bank of screens monitoring motorways and A-roads across England, he said he “understood” the problems people have had in what has been described as the country’s worst in 100 years.
He said: “I completely understand and share people’s frustrations when they can’t get home, can’t get to work, can’t see their loved ones and Christmas plans are sent awry.
“What the Government has been doing is getting on top of the situation, making sure we have got the supplies of salt we need, making sure we help the vulnerable.
“Also chancing the rules allowing night flights at Heathrow and other airports and lorry drivers longer hours to get deliveries done.
“We are totally focused on this issue.”
He said local authorities had “good supplies” of salt.
“Obviously we have extreme weather events,” Mr Cameron added.
“Parts of England have been -19, and five inches of snow have been falling in an hour.
“There are some weather events which are very difficult to plan for but I think the response now, stepping up is the right thing to do.”
The National Traffic Control Centre is the hub of the English motorway network and acts as a real-time source of traffic information for the Highways Agency
Highways Agency spokesman Ian Bickley said salt supplies for the country had increased to 260,000 tonnes from 227,000 this time last year.
“Operationally people have worked well to ensure that the networks are working as efficiently as they can under the current conditions.”