Joseph Motsamai Semitjie faces charges of reckless or negligent driving, and failing to assist an injured person after a 2011 accident involving Thomas Ferreira.
The court heard on Wednesday that Semitjie failed to stop at a red traffic light at the Paardekraal intersection in Krugersdorp.
He told the court an accident could have been avoided had Ferreira, who was riding a motorbike, used the right lane.
It later emerged that Semitjie had not passed an advanced driver’s test.
“If you did not pass your advanced driving course, who gave you the authority to drive a state vehicle?” asked prosecutor Mickey Thesna.
Semitjie said his superior, who had also tested his driving skills, had done so.
He told the court he left Mmemezi’s house around 9.30am on the day of the accident in 2011. The MEC was to have been at a meeting at 9am.
Ferreira was on his motorcycle when Semitjie allegedly drove his BMW X5 left of the yellow line in Paardekraal Drive, and disregarded a red traffic light.
Ferreira, who was on Windsor Road, collided with the car in the middle of the intersection.
The case was postponed to Thursday to allow the defence to bring in more witnesses.