No. The tractor and blower will not crack your asphalt or interlocking stone. Although it looks large the weight of the machine is evenly distributed over the extra-large surface area of its tires, so that there is actually more weight per square inch being applied to your asphalt by your own car than by our tractors! And, our drivers are trained to lower their blowers in a controlled manner so that unnecessary jolts to the asphalt by the blower are minimized during the snow blowing process.
Furthermore, driveway markers are installed on the edges of your driveway to identify the boundaries of the asphalt so that the drivers do not drive on your grass! Snow blowing with a tractor is one of the gentlest methods in the industry at the moment for clearing snow from your driveway!