An Asda driver made an unexpected delivery when their van overturned during rush hour traffic.
The van was toppled on the A415 near Witney after colliding with another vehicle at around 5pm on Friday.
Fire crews cut one of the occupants free using specialist hydraulic cutting equipment and was taken to hospital.
Emergency services have not revealed details of the other vehicle involved or how seriously the person was injured.
Thames Valley Police are investigating the cause of the collision.
Crew Manager Chris Rowe said: “Crews worked along with ambulance services to release the casualties from the vehicle. We urge drivers to take care in wet weather conditions on the roads.”