Drivers in Gloucestershire have been asked to take care and slow down as heavy fog continues to plague visibility.
The Met Office has issued yellow warnings of fog until 12noon today.
Temperatures are set to stay around 5C (41F), but it will start getting warmer this afternoon to around 13C (55.4F).
Another bumper crowd expected at Cheltenham Racecourse today for Gold Cup Day, and police officers are urging drivers to take care on roads.
Emergency services rushed to the Kingsmeadow roundabout in Cirencester around 6.30am today after a crash.
A green Vauxhall Meriva was involved in a smash with a blue Vauxhall Zafira. No injuries were reported.
Cricklade Road is currently blocked.
Inspector Bill Stack, from Gloucestershire Police, said: "It is another really foggy day today, and we encourage people to driver slower than they would normally.
"Use your lights and fog lights and keep a safe distance, bigger than you normally would.
"Slow down. It is not worth rushing on the road if you are going to end up in A&E."