A bill for an act relating to motor vehicle window tint, and making penalties applicable.

This bill sets specific light transparency requirements for vehicle windows in Iowa. It prohibits operating a vehicle with front windshields less than 70% transparent, driver-side windows less than 50% transparent, or other side/rear windows less than 35% transparent. The law directly affects all drivers operating vehicles on Iowa highways, replacing previous rules that allowed the Department of Transportation to set standards. Violations carry a $70 fine, and the law maintains existing exemptions for law enforcement vehicles used in official duties.