Mechanical device to provide traction. If mechanical devices are mounted on both sides of a motor vehicle which, when activated by the driver, provide traction by deploying a chain of metal cross members under a tire while the vehicle is in motion, the:
1. Cross members must extend across at least 85 percent of the width of the tire; and
2. Devices may be used only upon the drive axles of the vehicle.
Last modified: February 25, 2006