Sponsors (4)
This is not an official government website.
Copyright © 2026 PLEJ LC. All rights reserved.
The bill trades clearer, narrowly targeted relief and operational reliability for vehicles and communities in extreme cold—reducing shutdowns and regulatory ambiguity—against higher localized pollution risks, longer‑term public health/economic costs, and added compliance and enforcement complexity.
Rural first responders, transportation workers, and residents in cold/remote areas face fewer engine derates, shutdowns, and vehicle strandings in extreme cold, improving emergency response reliability and personal safety.
State and federal regulators, manufacturers, and vehicle owners gain clearer definitions and applicability rules, reducing ambiguity about who and what is covered and helping enforcement and rulemaking.
Nationwide businesses and communities retain certainty that Clean Air Act standards generally remain in force, because the bill creates only narrowly defined, temporary exemptions rather than broad waivers.
Residents of cold-region and nearby communities would face increased local air pollution and higher respiratory health risks when emissions-control systems are suspended or exempted.
Loosening emissions controls in cold conditions could raise long‑term costs for local communities and taxpayers via higher healthcare spending and lost worker productivity from worsened air quality.
Narrow eligibility rules, manufacturer determinations, and added definitions increase compliance complexity and legal uncertainty for fleet owners and states, raising administrative burdens and litigation risk.
Requires the EPA to change Clean Air Act regulations so diesel vehicle makers can temporarily disable emissions‑related engine derates or shutdowns when ambient temperature is at or below 0°C and so certain vehicles in very cold conditions or operating north of 59°N can be exempted from diesel exhaust fluid (DEF) system requirements. The law limits these exceptions to protect human safety and essential operations in remote or very cold areas, while otherwise preserving Clean Air Act emissions standards. The EPA must issue the regulatory revisions within 180 days of enactment and define eligibility by operation location, prolonged freezing conditions, and manufacturer action; normal emissions controls must resume when temperatures rise above freezing unless continued maximum performance at or below 0°C is needed to prevent immediate danger or loss of essential functionality.
Introduced November 6, 2025 by Daniel Scott Sullivan · Last progress November 6, 2025