Two Port Augusta men died after their car left the road and hit a tree at Beaufort on Saturday night, November 3.
Emergency service crews were called to the Augusta Highway near Branch Hill Road, about 20 kilometres north of Port Wakefield, just after 7pm.
Both the driver, 58 years old, and the passenger, 45 years old, died at the scene.
Major Crash Investigators attended and examined the crash site.
The state's road toll is currently 63 – it was 80 at the same time last year.