A motorcyclist has been taken to hospital after a collision with a car in West End Road near the Polish War Memorial.
His condition was describe by police as "conscious".
The driver of the vehicle is believed to have stopped at the scene - no arrests have been made.
At the peak of rush hour, traffic on the busy A road heading north from Hayes stretched back to White Hart Roundabout and The Parkway.
The A40 slip roads to West End Road at The Polish War Memorial were also heavily congested at the time.
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