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
Subpart A--GENERAL PROVISIONS
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| Scope of the rules in this part.
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Subpart B--ADMINISTRATIVE PROVISIONS
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| Issuance, amendment, and revocation of the rules in this part.
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| Inspection and examination of motor vehicles.
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Subpart C--INSTRUMENTATION
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| Scope of the rules in this subpart.
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| Type of measurement systems which may be used.
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| Calibration of measurement systems.
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Subpart D--MEASUREMENT OF NOISE EMISSIONS; HIGHWAY OPERATIONS
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| Scope of the rules in this subpart.
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| Site characteristics; highway operations.
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| Ambient conditions; highway operations.
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| Location and operation of sound level measurement system; highway operations.
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| Measurement procedure; highway operations.
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Subpart E--MEASUREMENT OF NOISE EMISSIONS; STATIONARY TEST
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| Scope of the rules in this subpart.
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| Site characteristics; stationary test.
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| Ambient conditions; stationary test.
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| Location and operation of sound level measurement systems; stationary test.
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| Measurement procedure; stationary test.
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Subpart F--CORRECTION FACTORS
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| Scope of the rules in this subpart.
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| Microphone distance correction factors.
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| Ground surface correction factors.
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| Computation of open site requirements--nonstandard sites.
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| Application of correction factors.
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Subpart G--EXHAUST SYSTEMS AND TIRES
