A convoy of 106 trucks began and finished at 4 State Trucks in Joplin, Mo., said owner Bryan Martin. The convoy raised $10,000 for Special Olympics.
More than 70 trucks turned out for a 22-mile convoy route on I-80 and I-57 near Tinley Park, Ill.
Convoys for Special Olympics are held across the U.S. and Canada during September and October.
Affected tractors are equipped with an automated Eaton UltraShift Plus or Eaton Advantage Transmission with right hand stalk shifter. In the affected trucks, the display on the instrument panel can indicate “N” when the shifter is set into “D” or “R,” causing the truck not to move.