Police have closed one lane of the Golden Valley bypass after a crash between a car and a cyclist.
The rider has serious but not life threatening injuries and is being treated at the scene by ambulance crew.
The driver of the Alfa Romeo is from Worcester and is thought to be uninjured.
Speaking at 7.40am police said they had closed one lane of the Gloucester bound M5 sliproad and it would reopen in about an hour.
They warned motorists to expect delays.
Update at 9.50am: The cyclist, a man from Gloucester has been taken to Gloucester Royal Hospital in a stable condition. The driver from Droitwich has been taken to the same hospital but his injuries are not known. The road was still closed while a recovery vehicle cleared the car from the scene. Police are appealing for witnesses to the crash. Call 101 quoting incident 59 of October 9.