Flags and People Out the Windows

What are the statutes for having a flag pole or people hanging out or sitting out of the car window usually seen driving around after parades or some public events?

MCC 9-40-250 Driving with view obstructed prohibited

(a) No person shall drive a motor vehicle with any sign, poster, card, sticker or other non-transparent material upon the front windshield, or upon or protruding from any rear window, side window or roof which materially obstructs, obscures or impairs the view from both within or without the vehicle.

(d) No person shall drive any motor vehicle upon a roadway with any human being placed upon or protruding from the vehicle's roof, trunk, hood or any window; provided, however, that this subsection shall not apply (i) if the motor vehicle is part of a parade, public assembly or athletic event as defined in Section 10-8-330 of this Code and for which a permit has been obtained; or (ii) if the motor vehicle is being used by an officer or employee of the City of Chicago in the performance of his or her official duties.

625 ILCS 5/15-106 Protruding members of vehicles.
No vehicle with boom, arm, drill rig or other protruding component shall be operated upon any highway in this State unless such protruding component is fastened so as to prevent shifting, bouncing or moving in any manner.

625 ILCS 5/11-1406 Obstruction of driver's view or driving mechanism
(a) No person shall drive a vehicle when it is so loaded, or when there are in the front seat such a number of persons, exceeding three, as to obstruct the view of the driver to the front or sides of the vehicle or as to interfere with the driver's control over the driving mechanism of the vehicle.
(b) No passenger in a vehicle or streetcar shall ride in such position as to interfere with the driver's or motorman's view ahead or to the sides, or to interfere with his control over the driving mechanism of the vehicle or streetcar.