Cold Weather Diesel Reliability Act of 2026
The source supplies the latest action, but no lifecycle stage.
Latest action (16 Sep 2026): Placed on Senate Legislative Calendar under General Orders. Calendar No. 619.
What this bill does
The "Cold Weather Diesel Reliability Act of 2026" would require the Environmental Protection Agency (EPA) Administrator to allow manufacturers of certain diesel vehicles to suspend engine performance reductions or shutdowns. These functions are typically triggered by emissions control system faults. This suspension would be permitted when outdoor temperatures are at or below 20 degrees Fahrenheit and would resume once temperatures rise above that threshold. The bill also specifically authorizes manufacturers to permanently suspend these functions for agricultural equipment and for diesel vehicles primarily operated north of 59 degrees north latitude.
This legislation would affect manufacturers of on-highway diesel vehicles and nonroad diesel equipment, including agricultural machinery. It aims to ensure the reliability of diesel engines in prolonged cold weather conditions, particularly in rural and arctic regions. The bill states that these measures are intended to prevent occupational dangers, equipment failure, or loss of essential transportation functionality.
As of September 16, 2026, S. 3135 has been ordered reported by the Senate Committee on Environment and Public Works with an amendment. The next step in the legislative process would be for the bill to be considered by the full Senate.
Plain-English summary generated by Bill100 AI from the official record. Always verify against the source below.
Timeline
16 Sep 2026
Placed on Senate Legislative Calendar under General Orders. Calendar No. 619.
Common questions
- What does S. 3135 do?
- The "Cold Weather Diesel Reliability Act of 2026" would require the Environmental Protection Agency (EPA) Administrator to allow manufacturers of certain diesel vehicles to suspend engine performance reductions or shutdowns. These functions are typically triggered by emissions control system faults. This suspension would be permitted when outdoor temperatures are at or below 20 degrees Fahrenheit and would resume once temperatures rise above that threshold. The bill also specifically authorizes manufacturers to permanently suspend these functions for agricultural equipment and for diesel vehicles primarily operated north of 59 degrees north latitude. This legislation would affect manufacturers of on-highway diesel vehicles and nonroad diesel equipment, including agricultural machinery. It aims to ensure the reliability of diesel engines in prolonged cold weather conditions, particularly in rural and arctic regions. The bill states that these measures are intended to prevent occupational dangers, equipment failure, or loss of essential transportation functionality. As of September 16, 2026, S. 3135 has been ordered reported by the Senate Committee on Environment and Public Works with an amendment. The next step in the legislative process would be for the bill to be considered by the full Senate.
- Has S. 3135 become law?
- The source does not supply a confirmed lifecycle stage for S. 3135. Check the latest action and official source below.
- Who sponsored S. 3135?
- S. 3135 was sponsored by Sen. Sullivan, Dan [R-AK] (R-AK), with 3 cosponsors.
- What's the latest action on S. 3135?
- Placed on Senate Legislative Calendar under General Orders. Calendar No. 619. (16 Sep 2026).
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