---
kind: "unit"
title: "49"
title_heading: "Transportation"
key: "subtB/chV/part535"
level: "part"
label: "Part 535"
heading: "Medium and Heavy-Duty Vehicle Fuel Efficiency Program"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/49/subtB-chV-part535"
sections_count: 10
---

# Part 535 — Medium and Heavy-Duty Vehicle Fuel Efficiency Program

Title 49 C.F.R. — Transportation › Subtitle B — Other Regulations Relating to Transportation › Chapter V — National Highway Traffic Safety Administration, Department of Transportation

## Sections

- [§535.1. Scope.](/cfr/49/535.1.md)
- [§535.2. Purpose.](/cfr/49/535.2.md)
- [§535.3. Applicability.](/cfr/49/535.3.md)
- [§535.4. Definitions.](/cfr/49/535.4.md)
- [§535.5. Standards.](/cfr/49/535.5.md)
- [§535.6. Measurement and calculation procedures.](/cfr/49/535.6.md)
- [§535.7. Averaging, banking, and trading (ABT) credit program.](/cfr/49/535.7.md)
- [§535.8. Reporting and recordkeeping requirements.](/cfr/49/535.8.md)
- [§535.9. Enforcement approach.](/cfr/49/535.9.md)
- [§535.10. How do manufacturers comply with fuel consumption standards?](/cfr/49/535.10.md)