Millions of people are taking to the roads today as the great festive getaway begins in earnest.
Trafficmaster predicts more than 18 million vehicles will use the road network this weekend, peaking today.
The travel information company says this will create the longest evening rush hour of the year, with congestion building from 2pm to 7pm.
A unique mix of lorries making last minute deliveries, Christmas shoppers and families travelling to loved ones is to blame.
For those staying at home, the Highways Agency has suspended roadworks over the festive period on 26 sites from 6am tomorrow until 1am on January 2.
However, roadworks remain in place on a number of busy routes, including some on the M25.
Tomorrow will also be busy, with congestion once again starting around 2pm.
The main black spots are expected to be:
:: M25 Eastern and Western sectors
:: M1 around Luton and in the East Midlands
:: Old M6 between junctions 4 and 10
:: M60 around Manchester
:: M1 and M621 serving Leeds
:: A1M coming out of Gateshead and Newcastle
:: M32 from Bristol
:: M4 between Newport and Cardiff
Up-to-date information on road conditions on Britain's motorways and trunk roads, is available on the agency website at
www.highways.gov.uk or call 08457 504030.