Alabama

Tinting of front windshield glass to reduce light transmission is not permitted, except for the upper 6 inches of the windshield.

For side windows or rear windshield, glass tinting that reduces light transmission to less than 32% or increases light reflectance to more than 20% is not permitted.  For SUVs, vans and trucks, the limit is 32% for the driver’s window and the front passenger window only.