Current as of October 03, 2022 | Updated by FindLaw Staff
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Motor vehicle noise emissions, when measured according to the rules of this part, shall not exceed the values specified in Table 1.
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TABLE 1—MAXIMUM PERMISSIBLE SOUND LEVEL READINGS (DECIBEL (A))12 |
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Highway operation test |
Stationary tests |
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Soft site |
Hard Site |
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35 mi/h or less
|
Above 35 mi/h
|
35 mi/h or less
|
Above 35 mi/h
|
Soft site |
Hard site |
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If the distance between the microphone location point and the microphone target point is— |
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31 ft ( 9.5m) or more but less than 35 ft (10.7m) |
87 |
91 |
89 |
93 |
89 |
91 |
|
|
35 ft (10.7m) or more but less than 39 ft (11.9m) |
86 |
90 |
88 |
92 |
88 |
90 |
|
|
39 ft (11.9m) or more but less than 43 ft (13.1m) |
85 |
89 |
87 |
91 |
87 |
89 |
|
|
43 ft (13.1m) or more but less than 48 ft (14.6m) |
84 |
88 |
86 |
90 |
86 |
88 |
|
|
48 ft (14.6m) or more but less than 58 ft (17.1m) |
83 |
87 |
85 |
89 |
85 |
87 |
|
|
58 ft (17.1m) or more but less than 70 ft (21.3m) |
82 |
86 |
84 |
88 |
84 |
86 |
|
|
70 ft (21.3m) or more but less than 83 ft (25.3m) |
81 |
85 |
83 |
87 |
83 |
85 |
1 The speeds shown refer to measurements taken at sites having speed limits as indicated. These speed limits do not necessarily have to be posted.
2 This table is based on motor carrier noise emission requirements specified in 40 CFR 202.20 and 40 CFR 202.21.
Cite this article: FindLaw.com - Code of Federal Regulations Title 49. Transportation § 49.325.7 Allowable noise levels - last updated October 03, 2022 | https://codes.findlaw.com/cfr/title-49-transportation/cfr-sect-49-325-7/
FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature or via Westlaw before relying on it for your legal needs.
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