321E.24  Warning device on long loads.
  Any vehicle and load which exceed the limits provided in section 321.457 and in excess of a length of seventy-five feet shall carry a warning device clearly visible to a motorist approaching from the rear for a distance of five hundred feet.
[C71, 73, 75, 77, 79, 81, §321E.24]
83 Acts, ch 116, §10