Police are appealing for witnesses after a 17-year-old was seriously hurt when he was hit by a car in Bognor Regis.
The teenagers was hit at the junction of the High Street and Gloucester Road at around 8.25pm on Thursday, July 19.
The road was closed for two hours while police investigated the crash.
Sgt Stewart Goodwin, of the roads policing unit, said: “We are appealing for witnesses who may have seen the crash or the BMW car just before the collision to call 101 quoting Op Begin.
“We are also keen to trace the rider of a yellow sports motorcycle seen in the area at the time of the crash.”