A bill for an act relating to motor vehicle window tint, and making penalties applicable.(See HF 766.)

House File 206 (HF 206) was a bill introduced in the Iowa General Assembly in 2025, aiming to amend existing regulations on motor vehicle window tinting. The bill proposed reducing the minimum light transmittance requirement for front side windows from 70% to 50%, allowing for darker window tints. This change was intended to provide vehicle owners with more flexibility in customizing their vehicles while maintaining safety standards. HF 206 was later renumbered as HF 766, which successfully passed both legislative chambers and was signed into law by the governor on May 15, 2026, with the new regulations taking effect on July 1, 2026.

Supporters of the bill, including vehicle customization enthusiasts and certain automotive businesses, welcomed the change, highlighting the increased flexibility for vehicle owners to apply darker tints to their front side windows. They argued that the new law aligns Iowa's regulations more closely with those of neighboring states, potentially reducing confusion for drivers and law enforcement. Additionally, proponents suggested that the updated tinting standards could enhance privacy and reduce glare for drivers, contributing to improved comfort and safety.

Opponents of the bill, including some law enforcement agencies and safety advocates, expressed concerns that allowing darker window tints could impede the ability of police officers to see inside vehicles during traffic stops, potentially increasing safety risks. They also argued that reduced visibility into vehicles might hinder the identification of occupants and activities inside, posing challenges for law enforcement and public safety. Furthermore, critics worried that darker tints could decrease visibility for drivers, especially under low-light conditions, potentially leading to an increase in traffic accidents.