Kentucky’s windshield rule changed in 2024. Its side-window percentages also use a specific laboratory test basis, so a film label alone is not a complete compliance check.
Read the official sources ↓Rules by window
| Window | Requirement |
|---|---|
| Windshield | Transparent strip outside the AS-1 forward-view area, or windshield material producing at least 70% transmission with the safety glass and neither red nor yellow. |
| Front side | Film must transmit at least 35% when tested on 1/8-inch clear glass. |
| Rear side | Film: at least 18% under the specified test; 8% for a qualifying multipurpose passenger vehicle. |
| Rear window | Same film thresholds as rear sides; nontransparent rear treatment requires mirrors on both sides. |
Reflection, labels and tolerance
Front film: maximum 25% reflection; rear film: maximum 35%, measured as the statute specifies. A compliance label with product and business details belongs inside the left door jamb. The statutory ±3% measurement tolerance should not become a darker installation target.
Medical exemptions
No medical-waiver process appears in the retrieved current section. Do not assume a physician’s note authorizes darker tint.
Other materials
Perforated rear-window products have separate transmission and reflectance tests. Factory glazing compliant with federal standards is treated separately.
Before you rely on this guide
This is general information, not legal advice, a vehicle inspection, or permission to install a particular film. Exceptions and enforcement procedures can depend on your circumstances.
- The film-on-clear-glass test and finished-windshield test are different; confirm the proposed product and vehicle with a qualified installer.
The research date shows when the sources were checked. It is not the date the law took effect, and it does not mean this page is monitored continuously. This research preview still awaits human editorial review; we do not claim attorney review.
Official sources
- Kentucky Legislature: KRS 189.110 ↗
Current section; windshield amendment effective July 15, 2024.
- Kentucky Legislature: 2024 SB 46 ↗
Enacted amendment allowing the 70% windshield option.
- Kentucky Legislature: Chapter 189 ↗
Official chapter states it includes enactments through the 2026 Regular Session.