According to Sussex Police, officers were called to Upper Shoreham Road at 9.26am this morning to reports of a collision between a car and a pedestrian.
The pedestrian - a local woman - was taken to Royal Sussex County Hospital in Brighton with serious, but not life-threatening, injuries, police said.
A section of the road was temporarily closed but has since reopened, police added.
Anyone who saw what happened is asked to email [email protected] quoting serial 292 of 17/02.