A person shall be guilty of reckless driving who drives a motor vehicle on the highways in the Commonwealth (i) at a speed of twenty miles per hour or more in excess of the applicable maximum speed limit where the applicable speed limit is thirty miles per hour or less, (ii) at a speed of sixty miles per hour or more where the applicable maximum speed limit is thirty-five miles per hour, (iii) at a speed of twenty miles per hour or more in excess of the applicable maximum speed limits where the applicable maximum speed limit is forty miles per hour or more, or (iv) in excess of eighty miles per hour regardless of the applicable maximum speed limit.