دى بعض القوانين فى امريكا وعندهم كل ولاية ليها قانون
ده قانون اوهايو 50 % فيمية للزجاج الجانبى واى درجة للخلفى
Section 4501-41-03 of the code provides the specifics for window tints.
Tinting materials applied to the right or left of the driver must have a light transmission of no less than 50 percent plus or minus 3 percent, and cannot be red or yellow in color.
For rear and back windows, tinting of any darkness level can be used.
Read more: Ohio Law Regarding Tinted Windows in Vehicles | eHow.com Ohio Law Regarding Tinted Windows in Vehicles | eHow.com