A pedestrian in his late 30s or early 40s has died after he was struck by a car on the N11 near Bray in Co Wicklow.
The crash happened at around 7.40pm.
The driver of the car was taken by ambulance to St Vincent's University Hospital. Her condition is not known.
The northbound carriageway between junctions 7 and 8 is closed to facilitate garda forensic collision investigators.
Diversions are in place.
Anyone who was in the area or who has any information about the incident is asked to contact Bray Garda station on 01 6665300.