Drivers are advised that motorways and major A-roads leading to the Royal International Air Tattoo at RAF Fairford in Gloucestershire are likely to be busy between tomorrow and Sunday, July 13.
The A417/A419, M4 and M5 are all expected to be busy with famlies heading to the Air Tattoo.
The Highways Agency, which manages the motorways and major A roads in England, is advising drivers to plan and check their travel routes in advance, and to keep up-to-date with the latest road conditions.
Traffic volumes will be monitored and electronic signs on the M4 and M5 will display route directions to the event, warn road users of increased traffic volumes, possible delays or the cancellation of the event.
For updates call the Highways Agency Information Line on 0300 123 5000.