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Bill > HR6250


US HR6250

US HR6250
Cold Weather Diesel Reliability Act of 2025


summary

Introduced
11/21/2025
In Committee
11/21/2025
Crossed Over
Passed
Dead

Introduced Session

119th Congress

Bill Summary

A BILL To require the Administrator of the Environmental Protection Agency to authorize manufacturers of certain vehicles to suspend engine derate or shutdown functions in prolonged cold weather conditions, and for other purposes.

AI Summary

This bill addresses challenges faced by diesel vehicles operating in extremely cold regions by requiring the EPA Administrator to modify Clean Air Act regulations to provide relief from certain emissions control requirements during prolonged freezing conditions. Specifically, the bill allows manufacturers of diesel vehicles to temporarily suspend engine derate or shutdown functions when temperatures are at or below zero degrees Celsius, ensuring that critical transportation and emergency services are not impeded by emissions control system malfunctions. The bill provides year-round exemptions for vehicles primarily operated in regions north of 59 degrees north latitude or in areas where diesel exhaust fluid systems become impractical due to extreme cold. These exemptions permit vehicles to maintain full engine performance during cold weather to prevent occupational danger, equipment failure, or loss of essential transportation functionality in remote areas. Importantly, the bill emphasizes that these provisions are temporary and do not permanently waive emissions standards, with normal emissions control operations resuming when temperatures rise above zero degrees Celsius. The legislation is motivated by findings that current emissions regulations can create serious safety risks in cold weather regions where diesel vehicles are crucial for transportation and emergency services.

Committee Categories

Business and Industry

Sponsors (1)

Last Action

Referred to the House Committee on Energy and Commerce. (on 11/21/2025)

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