Forecasters have warned of the risk of ice for the West Midlands as the cold snap continues.
A yellow weather warning for ice has been issued by the Met Office as councils prepare for freezing temperatures.
Drivers and commuters in remote areas have been urged to be cautious.
Motorists have been warned road temperatures could be 1C-2C lower than the air figures.
Meteorologist Martin Bowles, from the Met Office, said:
Thursday is tipped to be the coldest day of the week for large parts of the country.
The colder conditions come as the Local Government Association's (LGA) annual winter readiness survey shows that councils are well prepared for plummeting temperatures with a substantial stock of grit.
Some 92% of councils have either more salt in stock for this year, or the same level as they did last year, and the LGA said gritters would be out treating thousands of miles of roads whenever overnight temperatures drop below zero in the coming days.
Councillor Martin Tett, the LGA's transport spokesman, said:
The weather warning is in place until 10am on Tuesday.