49 C.F.R. PART 325--COMPLIANCE WITH INTERSTATE MOTOR CARRIER NOISE EMISSION STANDARDS

TITLE 49--Transportation

Subtitle B--OTHER REGULATIONS RELATING TO TRANSPORTATION

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.
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