National Highways has issued a traffic warning ahead of the Bristol Balloon Fiesta, with thousands of visitors expected to descend on the area. Junction 19 on the M5 motorway is anticipated to experience significant congestion during the event. Drivers are advised to plan their journeys carefully, allow extra travel time, and consider alternative routes where possible to avoid delays. The Balloon Fiesta, a popular annual event, draws large crowds, making traffic management a priority for local authorities and transport officials.