A truck driver was taken to Wollongong Hospital in a stable condition with minor leg injuries after rolling his vehicle at the bottom of Mount Ousley.
Emergency Services were called just after 2.30pm yesterday after the truck was forced to use the safety ramp.
The vehicle overshot the arrested bed and rolled.
The driver was trapped for a short time before being freed from the cabin.
The incident caused major delays both south and northbound on the M1.
Images: Traffic and Highway Patrol Command