Update history
Documented corrections, source checks, and tool changes, with the remaining limits kept in view.
This history begins with the documented October 14, 2026 changes. Earlier activity has not been reconstructed. A content-update date records an edit; a source-review date records a check of cited material. Law signing and effective dates are shown separately when established.
This is a public research preview. Human editorial review is still pending, and this history is not a claim that all jurisdictions are fully verified or continuously monitored. Read our editorial standards.
Research correction
Indiana: current code checked; wording conflict retained
Content updated (UTC) · Sources reviewed (UTC)
Replaced the historical-only source caveat after checking the current 2026 IC 9-19-19-4. The guide now distinguishes its named windows, AS-1 placement, manufacturer-glazing documentation, and medical certification requirements.
- The statutory “and” joining transmission and reflectance conditions differs from agency summaries. The guide remains verification-limited and does not promise a legal percentage or enforcement outcome.
- The October 14 review and edit are not a newly effective law. No effective date is inferred from the section’s amendment history.
Research correction
Mississippi: SB 2453 enactment confirmed
Content updated (UTC) · Sources reviewed (UTC)
Law signed:
Law effective:
The official enacted-bills summary confirms that SB 2453 was signed March 13, 2026 and took effect July 1, 2026. The guide now confirms Mississippi-licensed optometrists alongside physicians in the medical-certification provision, replacing the earlier uncertainty about enactment.
- This enactment check initially referenced an October 2023 affidavit. A subsequent review found a newer DPS-linked form; see the separate affidavit update below. Current consolidated-code and optometrist-paperwork limitations remain.
Sources and references
Content clarification
New York: medical scope and examination timing clarified
Content updated (UTC) · Sources reviewed (UTC)
Clarified that §375(12-a)(c) expressly addresses the windshield and front-side provisions in (b)(1) and (2), rather than a blanket exemption for every pane. Added the current MV-80W requirement for an examination within 60 days of submission and an explanation of why other protective measures are inadequate.
- DMV approval and the current form’s medical-provider and documentation instructions still apply. This records a clarification to the guide, not a newly enacted medical exemption.
Sources and references
Source clarification
Louisiana: Act 143 and effective date documented
Content updated (UTC) · Sources reviewed (UTC)
Law effective:
Added the Act 143 (HB 119) basis and August 1, 2025 effective date for the front-side minimum’s change from 40% to 25%. The guide already used the 25% minimum. A targeted 2026 enacted-law citator check found no amendments to R.S. 32:361.1–361.3.
- The targeted citator check is not a claim that every part of Title 32 has been consolidated. Existing medical-windshield qualifications remain in the guide.
Source-link correction
North Carolina: official inspection link repaired
Content updated (UTC) · Sources reviewed (UTC)
Replaced the outdated .org agency link with the verified NCDMV .gov inspection page. The guide’s existing December 1, 2025 inspection-change explanation and substantive tint rules are unchanged.
- This is a source-link correction, not a new repeal of tint requirements.
Sources and references
Tool correction
Factory lookup: unsupported numerical suggestions removed
Content updated (UTC)
Removed generic numerical factory-glass suggestions where the relevant vehicle, year, trim, and glass position were not verified. Catalog matches now identify the vehicle only and state that no verified vehicle-specific VLT is available; they do not populate or clear calculator inputs.
- The limited catalog has no verified vehicle-specific glass VLT values. A broad manufacturer bulletin remains a separate general reference, not a suggested value for the vehicle. Use manual entry from a verified specification or an actual meter reading.
Tint planner and factory lookup ↗
Sources and references
Tool update
Planner: limited source-checked numerical comparisons
Content updated (UTC) · Sources reviewed (UTC)
Added four cautious numerical outcomes for six reviewed passenger-car contexts in Texas, North Carolina, Louisiana and New York. The tool asks for required vehicle and exemption details, checks both side windows where appropriate, and links the applicable sources.
- This is a limited pilot, not completed numerical coverage of all states, vehicle classes or windows. Pennsylvania remains outside the pilot while its inspection applicability is being resolved.
- Unknown or unsupported circumstances cannot produce a numerical determination. Meeting a documented VLT minimum does not establish full legal compliance.
- The two-percentage-point caution band is a tool design choice, not a legal tolerance or measured accuracy. Calculations use unrounded values and never subtract statutory tolerances.
Scope clarification
Arkansas: clarified the rear-side pane position
Content updated (UTC) · Sources reviewed (UTC)
Clarified that the stated rear-side transmission rules name the side windows immediately behind the driver. The percentages have not changed.
- The state-authorized 2025 compilation is the source; full live-code freshness remains a limitation.
- This clarification does not expand the numerical calculator pilot or establish rules for every possible rear-side pane.
Sources and references
Tool update
Calculator: printable window-by-window worksheet
Content updated (UTC)
Added a browser-printable planning worksheet with separate glass, film and estimated combined transmission values for six window positions, plus blank fields for installed meter readings.
- Entries require manual confirmation of known or measured glass and intended film values; the tool does not substitute a factory-glass guess.
- Source-checked numerical evidence is included only for a matching supported comparison. The worksheet is not a certificate or legal compliance determination.
- Entries remain only in page memory. Printing and Save as PDF depend on the browser.
Sources and references
Source update
Mississippi: newer posted affidavit still needs clarification
Content updated (UTC) · Sources reviewed (UTC)
Following the current DPS agency link revealed an affidavit with a Revised 08/28/2026 footer. It still specifies an attending physician and physician signature despite the verified 2026 optometrist amendment.
- The filename includes a different date; the document footer is reported without treating the filename as its revision date.
- The newer document does not resolve acceptable optometrist paperwork. Confirm the process with the county tax collector. No direct form shortcut is offered in the resource finder.
Mississippi guide ↗ · Medical exemption resources ↗
Sources and references
Guide and tool update
Added windshield, vehicle-type and exemption resources
Content updated (UTC) · Sources reviewed (UTC)
Added two supporting guides and a searchable medical-resource directory with 51 state/D.C. guide links and five focused official-resource reviews.
- Only five resource processes received the focused review; guide-only entries are not verified form recommendations.
- The federal business-modification statute is cited to its identified 2023 edition, and current-codification retrieval remains a limitation.
- No eligibility determination, medical intake or expanded numerical comparison coverage is provided.
Medical exemption resources ↗ · Windshield tint ↗ · Vehicle types ↗
Scope clarification
Maryland: added rear brake-light placement restriction
Content updated (UTC) · Sources reviewed (UTC)
Added the inspection rule that keeps aftermarket tint out of the rear-window area in front of an inside-mounted high brake light.
- This is a placement restriction, not a new VLT percentage or an expansion of numerical calculator coverage.
- Vehicle classes and other inspection requirements still need separate checks.
Sources and references
Research correction
New Mexico: current official statute retrieved
Content updated (UTC) · Sources reviewed (UTC)
Replaced the current-code access limitation after reading the official consolidated section. Clarified registration scope, medical affidavit possession, labels and vehicle exceptions.
- Enforcement measurement remains unresolved. The guide stays verification-limited and is excluded from numerical calculator comparisons.
- This is a source review and wording correction, not a new law or a newly effective threshold.
Sources and references
Resource update
Medical resource finder: six additional focused reviews
Content updated (UTC) · Sources reviewed (UTC)
Added Arizona and Nevada application resources and Pennsylvania process guidance. Added explicit confirmation holds for Massachusetts, Maryland and Virginia. The directory now has 11 focused resource reviews and 40 guide-only entries.
- Maryland and Virginia practitioner wording differs between official sources; Massachusetts current application retrieval remains incomplete.
- No medical eligibility decision or calculator rule expansion is introduced. A submitted application is not an issued exemption.
Sources and references
Research correction
Texas: current rule and rear-window area clarified
Content updated (UTC) · Sources reviewed (UTC)
Reconciled the earlier administrative-code access note with the successful official source review. The guide now distinguishes the rear-window driver-visibility area from the permitted topmost shade band when qualifying outside mirrors are absent.
- No new numerical calculator context is enabled. The existing Texas pilot remains limited to front side windows.
- This source review and wording correction is not a newly effective law.
Sources and references
Scope clarification
New York: model-year scope visible beside the limits
Content updated (UTC) · Sources reviewed (UTC)
Added the 1992-and-newer model-year qualification to the introduction, window summary and practical answers, consistent with the already scoped calculator pilot.
- Older vehicles require a separate historical-compliance check. The guide does not turn an older inspection figure into general operational permission.
- The tint limits and the rules available in the calculator are unchanged.
Sources and references
Research correction
Six state guides: qualifications and documentation clarified
Content updated (UTC) · Sources reviewed (UTC)
Clarified Minnesota’s marking-date scope, Iowa’s separate clear-vision duty, Pennsylvania’s differing medical-certificate transfer wording, South Carolina’s certificate placement, Wisconsin’s class/year applicability, and an unresolved Oregon certificate-documentation question. No numerical calculator context was added.
- These are source-review clarifications, not newly enacted laws. Oregon’s documentation interaction and Pennsylvania’s transfer wording remain unresolved; confirm the applicable process with the state agency.
- The guides remain summaries. This update does not establish complete verification of all historical, vehicle-specific or medical circumstances.
Minnesota guide ↗ · Iowa guide ↗ · Pennsylvania guide ↗ · South Carolina guide ↗ · Wisconsin guide ↗ · Oregon guide ↗
Research correction
Hawaii: inspection details and appearance uncertainty clarified
Content updated (UTC) · Sources reviewed (UTC)
Added the current periodic-inspection rule’s AS-1 windshield meter procedure and model-year 2013-and-newer rear stop-lamp clearance requirement. The appearance discussion now preserves the statute’s joined conditions instead of presenting a standalone color/reflectance ban.
- These inspection details apply within the cited chapter’s scope. The six-percentage-point side/rear meter allowance is not added to the 70% windshield reading.
- Application of the joined statutory appearance conditions remains unresolved. No new calculator context or complete compliance conclusion is provided.
Sources and references
- Hawaii HAR 19-133.2-34, current 2026 compilation ↗
PDF pages 40–43: inspection scope and meter procedure; section 19-133.2-2 on pages 7–8 supplies chapter scope. Current Highways Division rules link, effective August 30, 2026.
- Hawaii Legislature: HRS 291-21.5 ↗
Source repair
Oklahoma: broken medical-form link replaced; process caution retained
Content updated (UTC) · Sources reviewed (UTC)
Replaced the unavailable July-2024 application link with the live PDF linked from DPS Medical Standards Forms. The guide now distinguishes a reachable official form from a verified current submission and approval process.
- The form retains legacy agency and rule references and inconsistent tint wording. Current submission and approval details remain unresolved; confirm them before sending medical records.
- This source repair does not establish medical eligibility, a permitted medical tint percentage or a new calculator context.
Sources and references
- Oklahoma DPS: Tinted Window Exemption Application ↗
Live PDF linked by the DPS Medical Standards Forms page, checked October 14, 2026. Contains legacy agency/rule references; confirm the current submission route before sending medical records.
- Oklahoma DPS: Medical Standards Forms ↗
Agency landing page linking the currently posted tint application; last-modified display October 9, 2026.
Research correction
Alaska and Illinois: current-source access distinguished
Content updated (UTC) · Sources reviewed (UTC)
A complete direct official Alaska rule capture replaced an earlier access gap. Illinois now carries a guide-wide verification limitation because complete current official statute retrieval failed; its separately retrieved medical guidance does not resolve that gap.
- Alaska’s page did not display a compilation-through or amendment date; retrieval does not certify every historical or vehicle-specific condition.
- Illinois’s listed values are not newly disproven, but full current statutory currency remains unverified. No numerical comparison context is added.
Alaska guide ↗ · Illinois guide ↗
Sources and references
- Alaska Administrative Code, 13 AAC 04.223 ↗
Official Legislature code text directly retrieved on October 14, 2026, including all of 13 AAC 04.223(a)–(h). The page displays no explicit compilation-through or amendment date; the research date is not an amendment date.
- Illinois Vehicle Code, 625 ILCS 5/12-503 ↗
Official indexed excerpts support the cited provisions and show Public Act 103-32 effective January 1, 2024. Complete current-section retrieval was blocked by a certificate-validation error on October 14, 2026; indexed text does not establish current full-section currency.
Research correction
New Hampshire: medical-provider wording updated and qualified
Content updated (UTC) · Sources reviewed (UTC)
Law effective:
Added the August 31, 2026 lasting-necessity amendment and removed an unqualified statement that relied on the older rule alone. The guide distinguishes the statutory provider wording from the published 2025 rules.
- Confirm the current provider and form process with DMV; the wording differences are not silently reconciled.
- The update does not resolve the separate changing inspection program or provide medical eligibility advice.
Sources and references
- New Hampshire RSA 266:58-a ↗
Official statute: front/rear percentages, vehicle classes and windshield strip.
- New Hampshire Saf-C 2500 ↗
Official rules incorporate September 20, 2025 changes, medical process and two/four-year permit durations.
- New Hampshire RSA 266:61-a: medical waivers ↗
Current statutory provider and waiver-duration provisions, including the August 31, 2026 amendment; compare with published Saf-C 2500.
- New Hampshire 2026 SB453 ↗
Enacted amendment to lasting-medical-necessity documentation, effective August 31, 2026; distinct from this guide’s review date.
Research correction
Seven guides: documentation and inspection caveats made explicit
Content updated (UTC) · Sources reviewed (UTC)
Added Maine’s legacy-rule interaction, Rhode Island’s installer-label authority, West Virginia’s inspection-wording limitation, Virginia and Maryland process qualifications, and the condition attached to D.C.’s listed vehicle exemptions. Tennessee’s previously unavailable signed 2024 act was also recovered and linked.
- These are scoped source corrections and qualifications, not newly effective numerical tint rules.
- Maine’s rule interaction, West Virginia inspection details, and Virginia/Maryland process questions remain unresolved. Tennessee still lacks a verified current consolidation.
Maine guide ↗ · Rhode Island guide ↗ · West Virginia guide ↗ · Virginia guide ↗ · Maryland guide ↗ · District of Columbia guide ↗ · Tennessee guide ↗
Sources and references
- Maine Secretary of State: currently linked Chapter 12 tint rule ↗
Older rule still linked by the current rule index; its interaction with later statutory rear-glass exceptions remains unresolved.
- Rhode Island General Laws §31-23.3-3 ↗
Statutory installer-label requirements, including the label’s size, content and position. Read these with the exceptions in §31-23.3-4.
- West Virginia State Police: inspection study guide ↗
Indexed official summary used only to identify a wording discrepancy; complete current inspection manual and measurement procedure were not retrieved.
- Virginia inspection rule 19VAC30-70-210 ↗
Windshield inspection language compared with the statutory clear-film allowance; implementation remains unresolved.
- Maryland State Police: current medical tint waiver form ↗
Agency form also names optometrists, while the statute specifies a Maryland-licensed physician. Signer/process difference remains unresolved.
- D.C. Code §50-2207.02 ↗
Current official Code: ordinary/mini-van percentages, top strip, parked vehicles and exemptions.
- Tennessee signed Public Chapter 602 (2024) ↗
Signed March 27, 2024; officer terminology amendment, not a new numerical tint permission. Current consolidation remains unverified.
Guidance clarification
Arizona, Oklahoma and Louisiana: additional conditions made clearer
Content updated (UTC) · Sources reviewed (UTC)
Made rear-window reflectance conditions explicit in Arizona and Oklahoma. Added Louisiana’s inspection-specific smoke-only, transmitted-color and glass-wrap restrictions, with the official rule source.
- These are clarifications of reviewed provisions, not newly effective laws or new calculator permissions. Arizona’s separate mirror exception remains distinct; Louisiana’s wording applies to ordinary nonexempt inspection situations.
- The Louisiana rule review used the preserved original official compilation; a fresh direct download was unavailable. Existing classification and exemption uncertainties remain.
Guidance clarification
Delaware: material VLT and older inspection guidance distinguished
Content updated (UTC) · Sources reviewed (UTC)
Clarified that the amended statute describes tint/material transmission, while the posted regulation still describes an older combined-glass requirement. Identified the regulation’s ±3% wording as a manufacturer’s tolerance and limited older factory-glass guidance to its documented scope.
- The guide remains verification-limited. This clarification does not establish a finished-glass meter threshold, an enforcement allowance or replacement inspection instructions.
- The current code and older posted agency documents remain in tension; Delaware is still outside the numerical calculator pilot.
Sources and references
Research correction
Illinois: medical amendment date and conditional routes clarified
Content updated (UTC) · Sources reviewed (UTC)
Corrected the traumatic-brain-injury amendment’s attribution to Public Act 102-111, effective January 1, 2022. Public Act 103-32 retained that medical wording and separately added the windshield-object stop/search provision. Clarified conditional tint routes, the front-side adequate-eyewear exclusion and installation documentation.
- The guide remains verification-limited because the complete current section and subsequent amendment chain were not independently established. Historical acts do not prove current legal coverage.
- Current Secretary of State materials omit the TBI example. That mismatch does not establish an applicant’s eligibility or an agency refusal, and the separate stop/search provision is not blanket immunity from tint enforcement.
- Illinois remains outside the numerical calculator pilot. No tolerance has been subtracted from a machine threshold.
Research clarification
New Jersey: statutory scope, medical workflow and mirrors clarified
Content updated (UTC) · Sources reviewed (UTC)
Added the recovered consolidated statutory sources, medical-application and certificate-exhibition conditions, and the separate passenger and commercial mirror requirements. Documented a bounded screen of 2026 chapters 31–50 and the scope of the 2020 administrative readoption notice.
- The guide remains verification-limited. The statutory snapshot and bounded later-act screen do not establish every current administrative amendment or vehicle-specific requirement.
- The 2017 medical regulation and September 2026 Commission report remain qualified historical evidence. The 2019 inequality conflict and current administrative-code access limitation are unresolved; no numerical-calculator admission or new ordinary front-tint permission is granted.
Guidance clarification
Tennessee: historical installer records and investigator exception clarified
Content updated (UTC) · Sources reviewed (UTC)
Replaced the unqualified installer paragraph with the 2009 enacted requirements for installation in Tennessee, including the receipt’s vehicle and registration details. Added the signed 2016 investigator-vehicle act and clarified that it leaves the front-door material threshold intact.
- The guide remains verification-limited. The enacted sources do not establish a complete current consolidation, prescribed current label specifications or a finished-glass testing allowance.
- Current-code access, windshield wording, vehicle/pane mapping and unsupported reflectance, color and mirror claims remain unresolved. Tennessee remains outside the numerical calculator pilot.