SA Police said a white Nissan ute was driving south on Main South in Aldinga Beach when an incident occurred with the driver of a white Toyota.
Police will allege the Toyota driver was “gesticulating and driving in a dangerous manner,” and followed the Nissan closely.
Police said the Nissan driver was “gesticulating and driving in a dangerous manner.”
The two cars stopped on Norman Road, where the driver of the Toyota allegedly stabbed the driver of the Nissan.
A 36-year-old man from Sellicks Beach received a minor puncture wound and was treated at a hospital for non-life-threatening injuries.
Police attended the scene, before going to the Aldinga Beach home of the man accused of the attack.
The 50-year-old was arrested and charged with aggravated assault causing harm.
Police said they recovered a knife used in the alleged attack.
He will face Christie’s Beach Magistrates Court on September 19.
Anyone with information about the incident has been urged to contact police.