window banner

[Crzyguy972]

i have heard a variety of different things saying there illegal and some saying there legal. so for the truth can i put a window banner on you will be able to see through it and its about four inches tall. If i cant wat are the penalties thanks. heres the specific one. http://i117.photobucket.com/albums/o48/jmkworld55/blue20220ed.jpg

[The Law]

The law, verbatim:
http://www.dot10.state.pa.us/pdotforms/vehicle_code/chapter45.pdf
§ 4524. Windshield obstructions and wipers.
(a) Obstruction on front windshield.--No person shall drive any motor vehicle with any sign, poster or other nontransparent material upon the front windshield which materially obstructs, obscures or impairs the driver's clear view of the highway or any intersecting highway except an inspection certificate, sticker identification sign on a mass transit vehicle or other officially required sticker and no person shall drive any motor vehicle with any ice or snow on the front windshield which materially obstructs, obscures or impairs the driver's clear view of the highway or any intersecting highway.
(b) Obstruction on side and rear windows.--No person shall drive a motor vehicle with any sign, poster or other nontransparent material, including ice or snow, upon the side wings or side or rear windows of the vehicle which materially obstructs, obscures or impairs the driver's clear view of the highway or any intersecting highway. The placement of a registration permit upon the side or rear window of a vehicle shall not be considered a material obstruction.
(c) Other obstruction.--No person shall drive any motor vehicle with any object or material hung from the inside rearview mirror or otherwise hung, placed or attached in such a position as to materially obstruct, obscure or impair the driver's vision through the front windshield or any manner as to constitute a safety hazard.

Whether or not the banner truly obstructs your view is at the discretion of an officer and/or the court. In other words, if you do anything to attract negative attention to your car, don't be surprised if it has negative effects. As for penalties, you could be ticketed, fined, and may have to remove it to pass inspection.