Traffic chaos has greeted motorists on the A40 near Longford this afternoon.
Massive tailbacks have been reported, with dozens of drivers taking to Twitter to warn others away from the area.
However, police said they were unaware of any incidents.
Great Western Ambulance crews were called to the area at 1.30pm after a car driven by a man in his 70s collided with a lorry but it is unclear if that is what's reponsible for the gridlock.
The man was taken to Gloucestershrie Royal Hospital for checks but his injuries, mostly to his face, were not believed to be serious.