“The concrete curb is exactly like the curb you’ll find on the side of a road with an 8-inch drop from the road surface to the concrete ditch. The driver drives into the curb so that the left tire drops into that 8-inch ditch and then immediately steers to the right to come back onto the road surface,” Simpson said. “Without VDS, the steering wheel would be jerked hard to the left, and the driver would fight to maintain control. The steering system, which was designed to further bolster the safety of our trucks, dampens that violent input so the driver doesn’t have to deal with that hard pull from the steering wheel.”