An operator may not stop, except momentarily to pick up or discharge a passenger, stand, or park an occupied or unoccupied vehicle: in front of a public or private driveway; within 15 feet of a fire hydrant; within 20 feet of a crosswalk at an intersection; within 30 feet on the approach to a flashing signal, stop sign, yield sign, or traffic-control signal located at the side of a roadway. See Texas Transportation Code Sec. 545.302.