(625 ILCS 5/12-204)
(from Ch. 95 1/2, par. 12-204)
Lamp or flag on projecting load.
Whenever the load upon any vehicle extends to the rear 4 feet, or more
beyond the bed or body of such vehicle there shall be displayed at the
extreme rear end of the load, at the times specified in Section 12-201
hereof, a red light or lantern plainly visible from a distance of at least
500 feet to the sides and rear. The red light or lantern required under
this Section shall be in addition to the red rear light required upon every
vehicle. At any other time there shall be displayed at the extreme rear end
of such load a red flag or cloth not less than 12 inches square.
(Source: P.A. 77-37.)