Prosecutors say Carl Pistorius was driving recklessly in Vanderbijlpark, South Africa, when he crashed with the motorcyclist in the daytime. Oldwage disputes allegations that his client was driving recklessly and said the motorcyclist rode into Carl Pistorius' vehicle.
"Carl deeply regrets the accident. Blood tests conducted by the police at the time proved that he had not been under the influence of alcohol, confirming that it was a tragic road accident after the deceased collided with Carl's car," a statement from the Pistorius family said.
The motorcyclist died in a hospital a couple of days after the accident, Oldwage said.
Carl Pistorius was initially scheduled to go on trial Thursday -- during the middle of his brother's four day bail hearing.
The trial has been rescheduled for the end of March. His case could be over before his brother's murder trial is scheduled to start in June.
Carl Pistorius was a fixture at his younger brother's bail hearing last week, handing Oscar tissues as the 26-year-old sobbed uncontrollably in court.