A man has been arrested over this morning's three vehicle crash on the A27.
A 36-year-old man from the Netherlands who was driving a green DAF lorry has been arrested on suspicion of causing serious injury by dangerous driving.
He was taken into custody to be questioned with the aide of an interpreter.
A turquoise Vauxhall Corsa, a white Ford Transit and the lorry collided at about 11.40am between the Ford Road roundabout and the roundabout close to Arundel station.
Long queues built up after the road had to be closed while emergency services worked at the scene.
A 57-year-old woman from Littlehampton who was driving the car was taken to Worthing Hospital for treatment for suspected pelvic injuries. At one stage it was feared that she would need to be cut out of her vehicle but this did not prove necessary.
Her distressed puppy was removed safely from the vehicle and given to her family to care for.
PC David Craker said: "I'd like to speak to anyone who saw the crash or any of the vehicles involved being driven in the minutes before the collision.
"If you saw anything at all, no matter how small the detail, please contact us."
If you saw the collision please call 101 quoting serial 520 of 15/4 or email email@example.com.