Firefighters were called to free the driver from a Volkswagen Passat after it was involved in a three-car collision with a Volkswagen Bora and a silver Rover 416 at 8.24am.
The Passat driver was taken to Portsmouth's Queen Alexandra Hospital while the other three people were treated on the scene and did not require hospital treatment.
Two lanes of the A27 were closed for a short while. The car accident caused some delays to commuters as three ambulances, two fire crews and police attended the crash scene.
A spokeswoman for Hampshire Police said, "Fortunately, it doesn't appear there are any serious injuries."
Witnesses to the accident are being asked to contact Hampshire Police to help ith investigations.
Once liability for the crash has been determined, car accident compensation may be sought by those involved.
24 hour accident advice line
Freephone 0808 143 43 42
*A replacement vehicle can usually be supplied within 4-6 working hours, where there is an admission of liability from the other person’s insurance company. If this person is not known, their insurance details are not known, they are uninsured or there is a potential dispute over who caused the accident, a replacement vehicle cannot be provided.
