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Home Page > Executive Branch > Code of Federal Regulations > Electronic Code of Federal Regulations
e-CFR Data is current as of February 4, 2010
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
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