Traffic information service Romanse tweeted that one lane was blocked after the incident westbound between the Hilsea roundabout and Junction 12 of the M27.
Vehicles were backed up as far as Farlington but have now began to clear.
A South Central Ambulance Service spokesman said they received a call at 8.51am to a collision between a car and a lorry.
Police confirmed the car was a Ford Focus.
No-one was injured.