# 2025-19938: Tank Trucks Cleared for Blinking Brake Lights Renewal

2025-19938, Parts and Accessories Necessary for Safe Operation; Exemption Renewal for National Tank Truck Carriers, Inc., is a Federal Register notice from Transportation Department, Federal Motor Carrier Safety Administration published 2025-11-17, effective 2025-10-08 (as of 2026-06-08).

- Canonical: https://policyrisk.com/federal-register/2025-19938
- As of: 2026-06-08
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2025-19938
- Title: Parts and Accessories Necessary for Safe Operation; Exemption Renewal for National Tank Truck Carriers, Inc.
- Type: Notice
- Agencies: Transportation Department; Federal Motor Carrier Safety Administration
- Citation: 90 FR 51432
- Published: 2025-11-17
- Effective: 2025-10-08
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: none
- Last updated: 2026-06-08

## In one line

Tank Trucks Cleared for Blinking Brake Lights Renewal

## Summary

The Federal Motor Carrier Safety Administration just renewed a 5-year exemption letting tank truck carriers keep using special red or amber blinking brake lights on their trailers, along with the regular brake lights. This affects companies like National Tank Truck Carriers, Inc., helping improve safety without extra costs. The new rule kicks in on October 8, 2025, and runs through October 8, 2030.

## Abstract

FMCSA announces its final decision to renew an exemption requested by National Tank Truck Carriers, Inc. (NTTC) to allow motor carriers operating tank trailers to install or continue to use a red or amber brake-activated pulsating lamp positioned in the upper center position or in an upper dual outboard position on the rear of the trailers, in addition to the steady-burning brake lamps required by the Federal Motor Carrier Safety Regulations (FMCSRs). The exemption is renewed for 5 years, unless revoked earlier.

## Effects PRIA read

- Five-Year Exemption Renewed: benefit, medium. FMCSA renewed NTTC’s exemption for five years, effective October 8, 2025, through October 8, 2030. During this period, motor carriers operating tank trailers may continue to operate under the exemption instead of the standard steady-burning lamp requirement.
- Permitted Lamp Types and Locations: benefit, low. Motor carriers operating tank trailers are allowed to install or continue to use a red or amber brake-activated pulsating lamp in the upper center position or in an upper dual outboard position on the rear of the trailers, in addition to required steady-burning brake lamps. This permission is part…
- FMCSA Finds Safety Benefits Likely: benefit, high. FMCSA evaluated data from carriers (including Groendyke Transport, Inc. and Trimac Transportation Services, Inc.) and concluded that use of amber brake-activated auxiliary pulsating warning lamps is likely to achieve a level of safety equivalent to or greater than without the exemption. FMCSA cites…
- Federal Preemption During Exemption Period: benefit, low. While this exemption is in effect (October 8, 2025–October 8, 2030), no State may enforce a law or regulation that conflicts with the exemption for persons operating under it. States may choose to adopt the same exemption for intrastate operations, but are not required to do so.
- Exemption Revocation Conditions: cost, low. FMCSA will rescind the exemption if carriers fail to comply with its terms, if safety declines compared to pre-exemption levels, or if continuation would conflict with statutory goals. Interested parties may submit information to FMCSA showing safety is not being maintained.

## Related documents

- [2026-08144](https://policyrisk.com/federal-register/2026-08144): Administrative Rulemaking, Guidance, and Enforcement Procedures, 2026-04-27
- [2026-22829](https://policyrisk.com/federal-register/2026-22829): Qualification of Drivers; Exemption Applications; Epilepsy and Seizure Disorders, 2026-11-09
- [2026-22507](https://policyrisk.com/federal-register/2026-22507): Qualification of Drivers; Exemption Applications; Epilepsy and Seizure Disorders, 2026-11-04
- [2026-22508](https://policyrisk.com/federal-register/2026-22508): Qualification of Drivers; Exemption Applications; Epilepsy and Seizure Disorders, 2026-11-04
- [2026-22512](https://policyrisk.com/federal-register/2026-22512): Parts and Accessories Necessary for Safe Operation; Metronet Application for Exemption, 2026-11-04
- [2026-22510](https://policyrisk.com/federal-register/2026-22510): Qualification of Drivers; Exemption Applications; Epilepsy and Seizure Disorders, 2026-11-04

## Sources
- [2025-19938 on federalregister.gov](https://www.federalregister.gov/documents/2025/11/17/2025-19938/parts-and-accessories-necessary-for-safe-operation-exemption-renewal-for-national-tank-truck)
- [2025-19938 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2025-11-17/pdf/2025-19938.pdf)

## Related
- [Previous: 2025-19937, Parts and Accessories Necessary for Safe Operation; Exemption Renewal for Grote…](https://policyrisk.com/federal-register/2025-19937)
- [Next: 2025-19939, Agreement Between the Government of the United States of America and the Govern…](https://policyrisk.com/federal-register/2025-19939)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2025-19938 (as of 2026-06-08).