Two woman were taken to hospital after their car flipped and landed on its roof after a crash on the Rugby Relief Road.
The incident happened on the A4071 Western Relief Road, which was then closed in both directions, on Friday at around 3pm.
Two fire engines from Rugby and one from Southam attended.
The women had to be cut from the car by the fire service and one was airlifted to hospital while the other was taken in an ambulance.
A West Midlands Ambulance spokesman said: “Ambulance staff worked with the fire service to release the women from the wreckage.
“The passenger was suffering from a reduced level of consciousness and crews quickly began treating her for a head injury.
“She was anaesthetised in order to stabilise her condition and immobilised before being airlifted to University Hospital in Coventry.
“The driver was unconscious upon the arrival of crews and was trapped upside down for 20 minutes.
“After regaining consciousness she was treated for a head injury, immobilised and had pain relief administered before being taken to the same hospital by ambulance.”