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Title 49 Part 325

Title 49 → Subtitle B → Chapter III → Subchapter A → Part 325

Electronic Code of Federal Regulations e-CFR

Title 49 Part 325

Title 49Subtitle BChapter IIISubchapter APart 325


TITLE 49—Transportation

Subtitle B—OTHER REGULATIONS RELATING TO TRANSPORTATION (CONTINUED)

CHAPTER III—FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

SUBCHAPTER A—GENERAL REGULATIONS

PART 325—COMPLIANCE WITH INTERSTATE MOTOR CARRIER NOISE EMISSION STANDARDS

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Subpart A—GENERAL PROVISIONS

§325.1
Scope of the rules in this part.
§325.3
Effective date.
§325.5
Definitions.
§325.7
Allowable noise levels.
§325.9
Measurement tolerances.
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Subpart B—ADMINISTRATIVE PROVISIONS

§325.11
Issuance, amendment, and revocation of the rules in this part.
§325.13
Inspection and examination of motor vehicles.
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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.
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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.
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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.
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Subpart F—CORRECTION FACTORS

§325.71
Scope of the rules in this subpart.
§325.73
Microphone distance correction factors.
§325.75
Ground surface correction factors.
§325.77
Computation of open site requirements—nonstandard sites.
§325.79
Application of correction factors.
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Subpart G—EXHAUST SYSTEMS AND TIRES

§325.91
Exhaust systems.
§325.93
Tires.