[Code of Federal Regulations]
[Title 40, Volume 22]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR205.152]

[Page 128-130]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 205--TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS--Table of Contents
 
                         Subpart D--Motorcycles
 
Sec. 205.152  Noise emission standards.

    (a) Noise emission standards. (1) Street motorcycles of the 
following and subsequent model years must not produce noise emissions in 
excess of the levels indicated:

[[Page 129]]

    (i) Street motorcycles other than those that meet the definition of 
Sec. 205.151(a)(2)(ii):

------------------------------------------------------------------------
                                                              A-weighted
                         Model year                              noise
                                                              level (dB)
------------------------------------------------------------------------
(A) 1983....................................................          83
(B) 1986....................................................          80
------------------------------------------------------------------------

    (ii) Street motorcycles that meet the definition of 
Sec. 205.151(a)(2)(ii)(moped-type street motorcycles):

------------------------------------------------------------------------
                                                              A-weighted
                         Model year                              noise
                                                              level (dB)
------------------------------------------------------------------------
(A) 1983....................................................          70
------------------------------------------------------------------------

    (2) Off-road motorcycles of the following and subsequent model years 
must not produce noise emissions in excess of the levels indicated:
    (i) Off-road motorcycles with engine displacements of 170 cc and 
lower:

------------------------------------------------------------------------
                                                              A-weighted
                         Model year                              noise
                                                              level (dB)
------------------------------------------------------------------------
(A) 1983....................................................          83
(B) 1986....................................................          80
------------------------------------------------------------------------

    (ii) Off-road motorcycles with engine displacements greater than 170 
cc:

------------------------------------------------------------------------
                                                              A-weighted
                         Model year                              noise
                                                              level (dB)
------------------------------------------------------------------------
(A) 1983....................................................          86
(B) 1986....................................................          82
------------------------------------------------------------------------

    (3) Street motorcycles must be designed, built and equipped so that, 
when properly maintained and used, they will not produce noise emissions 
in excess of the levels specified in paragraph (a)(1) of this section, 
for an Acoustical Assurance Period of one year or a distance of 6000 km 
(3730 mi) after the time of sale to the ultimate purchaser, whichever 
occurs first.
    (4) Off-road motorcycles must be designed, built and equipped so 
that, when properly maintained and used, they will not produce noise 
emissions in excess of the levels specified in paragraph (a)(2) of this 
section, for an Acoustical Assurance Period of one year or a distance of 
3000 km (1865 mi) after the time of sale to the ultimate purchaser, 
whichever occurs first.
    (5) At the time of sale to the ultimate purchaser, all products must 
comply with the standards set forth in paragraphs (a)(1) and (2) of this 
section.
    (b) Measurement procedure. (1) The standards set forth in paragraph 
(a) of this section refer to noise emissions as measured in accordance 
with the measurement methodology specified in Appendix I-1 for all 
motorcycles except those street motorcycles that meet the definition of 
Sec. 205.151(a)(2)(ii).
    (2) The standards set forth in paragraph (a) of this section for 
street motorcycles that meet the definition of Sec. 205.151(a)(2)(ii) 
(moped-type street motorcycles) refer to noise emissions measured in 
accordance with the measurement methodology specified in Appendix I-2.
    (c) Low noise emission product standard. For the purpose of Low-
Noise-Emission Product certification pursuant to 40 CFR part 203, 
motorcycles procured by the Federal government after the following dates 
must not produce noise emissions in excess of the noise levels 
indicated:
    (1) For street motorcycles with engine displacement greater than 170 
cc:

------------------------------------------------------------------------
                                                              A-weighted
                            Date                                 noise
                                                              level (dB)
------------------------------------------------------------------------
(i) January 1, 1982.........................................          73
(ii) January 1, 1989........................................          71
------------------------------------------------------------------------

    (2) For off-road motorcycles with engine displacements greater than 
170 cc:

------------------------------------------------------------------------
                                                              A-weighted
                            Date                                 noise
                                                              level (dB)
------------------------------------------------------------------------
(i) January 1, 1982.........................................          75
------------------------------------------------------------------------

    (3) For off-road motorcycles with engine displacement 170 cc and 
lower and street motorcycles with engine displacement 170 cc and lower 
that do not meet the definition of Sec. 205.151(a)(2)(ii):

------------------------------------------------------------------------
                                                              A-weighted
                            Date                                 noise
                                                              level (dB)
------------------------------------------------------------------------
(i) January 1, 1982.........................................          71
------------------------------------------------------------------------

    (4) For street motorcycles that meet the definition of 
Sec. 205.151(a)(2)(ii) (moped-type street motorcycles):

------------------------------------------------------------------------
                                                              A-weighted
                            Date                                 noise
                                                              level (dB)
------------------------------------------------------------------------
(i) January 1, 1982.........................................          60
------------------------------------------------------------------------


[[Page 130]]


These levels refer to noise emissions as measured in accordance with the 
measurement methodologies specified in appendix I. LNEP's must also meet 
all requirements contained in paragraphs (a)(3), (4), and (5), of this 
section.

(Secs. 10 and 15 of the Noise Control Act, (42 U.S.C. 4909, 4914))