By James Salmon, Transport Editor For The Daily Mail
Published: 12:44 BST, 16 July 2019 | Updated: 13:45 BST, 16 July 2019
Motorists have been warned to face gridlock on major roads this weekend as the busiest summer getaway in five years begins.
Research by the RAC and traffic information supplier Inrix indicates that 13.4 million leisure trips will take place by car between Friday and Sunday.
This is around four million more than the same weekend in 2018 and would represent the largest summer getaway since 2014, according to the analysis.
Research by the RAC and traffic information supplier Inrix indicates that 13.4 million leisure trips will take place by car between Friday and Sunday. The peak spots are shown in this map
The worst day of the week for congestion is expected on 'frantic Friday' when many school terms end.
Some 5.3 million drivers embarking on day trips or longer breaks will battle for road space with regular commuters.
The M1 southbound from Junction 16 at Northampton to Junction 6 at north Watford is likely to see the longest jams, with delays of one-and-a-half hours.
Hold-ups of around an hour are predicted for the M25 anticlockwise from Junction 4 at Bromley to Junction 1 at Swanscombe/Dartford.
Significant queues are also forecast on the M40, M5 and M6. Drivers are advised to travel after 8pm if possible to avoid the worst of the traffic.
RAC patrol of the year Ben Aldous urged drivers to carry out basic car checks such as oil, coolant and tyre tread and pressure before embarking on a long