Two fire engines and a heavy rescue vehicle attended a crash on the A29.
West Sussex Fire and Rescue service was called to the collision, on Stane Street, Adversane at 1.37pm, a spokeswoman for the service said.
She added: “One person was handed into the care of SECAmb (South East Coast Ambulance Service). Police were also in attendance.”
SECAmb and Sussex Police have been approached for comment.