The driver of any vehicle approaching a stationary authorized emergency vehicle, when the authorized emergency vehicle is giving a signal by displaying alternately flashing red, red and white, blue, or red and blue lights or amber or yellow warning lights, shall:
   (a)   Proceed with due caution, yield the right-of-way by making a lane change not adjacent to that of the authorized emergency vehicle, if possible with regard to safety and traffic conditions, if on a highway having at least four lanes with not less than two lanes proceeding in the same direction as the approaching vehicle and reduce speed to a safe level for road conditions; or
   (b)   Proceed with due caution, reduce the speed of the vehicle, maintaining a safe speed not to exceed fifteen miles per hour on any nondivided highway or street and twenty-five miles per hour on any divided highway depending on road conditions, if changing lanes would be impossible or unsafe.
      (WVaC 17C-14-9a)