49 CFR Part 325
PART 325—COMPLIANCE WITH INTERSTATE MOTOR CARRIER NOISE EMISSION STANDARDS
- PART 325—COMPLIANCE WITH INTERSTATE MOTOR CARRIER NOISE EMISSION STANDARDS
- Subtitle B—Other Regulations Relating to Transportation › Chapter III—Federal Motor Carrier Safety Administration, Department of Transportation › Subchapter A—General Regulations
- Subpart A—General Provisions
- § 325.1 Scope of the rules in this part.
- § 325.3 [Reserved]
- § 325.5 Definitions.
- § 325.7 Allowable noise levels.
- § 325.9 Measurement tolerances.
- Subpart B—Administrative Provisions
- § 325.11 Issuance, amendment, and revocation of the rules in this part.
- § 325.13 Inspection and examination of motor vehicles.
- Subpart C—Instrumentation
- § 325.21 Scope of the rules in this subpart.
- § 325.23 Type of measurement systems which may be used.
- § 325.25 Calibration of measurement systems.
- § 325.27 Use of a windscreen.
- Subpart D—Measurement of Noise Emissions; Highway Operations
- § 325.31 Scope of the rules in this subpart.
- § 325.33 Site characteristics; highway operations.
- § 325.35 Ambient conditions; highway operations.
- § 325.37 Location and operation of sound level measurement system; highway operations.
- § 325.39 Measurement procedure; highway operations.
- Subpart E—Measurement of Noise Emissions; Stationary Test
- § 325.51 Scope of the rules in this subpart.
- § 325.53 Site characteristics; stationary test.
- § 325.55 Ambient conditions; stationary test.
- § 325.57 Location and operation of sound level measurement systems; stationary test.
- § 325.59 Measurement procedure; stationary test.
- Subpart F—Correction Factors
- § 325.71 Scope of the rules in this subpart.
- § 325.73 Microphone distance correction factors. 1
- § 325.75 Ground surface correction factors. 1
- § 325.77 Computation of open site requirements—nonstandard sites.
- § 325.79 Application of correction factors.
- Subpart G—Exhaust Systems and Tires
- § 325.91 Exhaust systems.
- § 325.93 Tires.
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