As of May 29, 2025Chapter III, Subchapter A — General regulations

Part 325 Compliance with Interstate Motor Carrier Noise Emission Standards

28 sections · What changed since this date

Subpart A—General Provisions

Subpart B—Administrative Provisions

§ 325.11Issuance, amendment, and revocation of the rules in this part.
§ 325.13Inspection and examination of motor vehicles.4 versions

Subpart C—Instrumentation

Subpart D—Measurement of Noise Emissions; Highway Operations

Subpart E—Measurement of Noise Emissions; Stationary Test

Subpart F—Correction Factors

Subpart G—Exhaust Systems and Tires