Vehicle compliance · United States
What your state will actually stop you for
Three things get drivers cited, fined, or turned away at the registration counter: film that is darker than the limit, an inspection you did not know was still required, and an EV surcharge that shows up on the renewal notice. This site covers all three, state by state, with the statute behind every number.
- Texas dropped the annual safety inspection for non-commercial vehicles on January 1, 2025. Emissions testing survives in 17 metro counties only.
- Washington permanently closed its emissions program on January 1, 2020. No county tests anymore.
- Iowa lowered its front side window limit from 70% to 50% on July 1, 2026 — one of the few states to loosen a tint rule.
If you are reading a guide that still says Texas requires an annual safety sticker, it is out of date.
The five states covered so far
We start with the four most populous states plus Washington, because they cover the whole range — from 70% front glass in California and New York down to 24% in Washington. Every line links to the detailed page.
Front side VLT is the combined reading of glass plus film — the number that matters when an officer puts a meter on your window. Rules checked November 2026.
Why the number matters more than the film
Factory automotive glass already transmits only about 70–75% of visible light. Film ratings are quoted on their own, but the law is enforced on the combined reading. A film sold as "35% VLT" dropped onto factory glass reads closer to 25% at the meter. That single sentence explains most tint citations in the United States.
It is also why California's rule looks impossible. The statute requires the film itself to transmit at least 88% of light. No normal film does that, so in California the honest answer is that the front side windows cannot be tinted — and the 70% figure exists to describe glass, not film.