PC Tom Van Der Wee, a Sussex Police constable, said on Twitter that the driver had a lucky escape after the incident in High Street Oving on Friday. Read the original report here.
A South East Coast Ambulance Service spokesman said a car and ambulance was sent to the accident just after 7.30pm.
It added: "The patient suffered back and head injuries and was taken to St Richard’s Hospital, Chichester."
Police closed off the road while the incident was dealt with and the road reopened at 10pm.