The A27 is partially closed following a serious collision in the early hours of the morning.
Fire crews and police officers attended the scene following the collision which left one car upside down.
A spokesman for Chichester Police said on Twitter: "Officers from @SussexRoadsPol are still on scene at a road traffic collision on the eastbound carriageway of the #A27 between #Tangmere and #Fontwell. The road will remain closed for foreseeable future@PCTomVanDerWee . Updates to follow."