A 29-year-old driver was killed after his car came off the A48 in Gloucestershire and hit a fence.
Emergency services were called to the scene of the accident, which happened close to the Severn Bore pub at Minsterworth, just after 0700 BST.
The road was closed for about six hours while a collision investigation took place. The coroner has been informed.
The driver of the Vauxhall Vectra car was from Gloucester. Police are appealing for witnesses to the crash.