As far as equipment design in concerned, we've gone to the philosophy that 100 kilometres per hour is fast enough on highways, so our units are road-speed limited to that highway speed. We also track the speed while they're driving at lower speeds, where there's an 80 kilometre zone or less. All our newer tractors are equipped with roll stability built right into the truck. It is a fairly complex system that monitors road speed, it monitors positioning of the vehicle, it can sense if the load is shifting, like if you're driving off the road, and it can actually intervene and apply brakes, slow the unit down, and get it straightened out so it helps to prevent the rollover in the vehicle.