A driver was left with a head injury after a six vehicle crash on the A27.
There were long delays this morning near the Manor roundabout, Lancing, following the crash.
Emergency services were called at 8.24am to the six vehicle crash.
One lane was closed, leading to huge tailbacks eastbound.
Argus reporter Ben Leo, who was stuck in the traffic, reported moving just a matter of metres in half an hour.
There were also delays westbound.
The accident has been cleared and traffic is moving.