[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: 40CFR202.12]

[Page 81]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 202--MOTOR CARRIERS ENGAGED IN INTERSTATE COMMERCE--Table of Contents
 
                      Subpart A--General Provisions
 
Sec. 202.12  Applicability.

    (a) The provisions of Subpart B apply to all motor carriers engaged 
in interstate commerce.
    (b) The provisions of Subpart B apply only to those motor vehicles 
of such motor carriers which have a gross vehicle weight rating or gross 
combination weight rating in excess of 10,000 pounds, and only when such 
motor vehicles are operating under the conditions specified in Subpart 
B.
    (c) Except as provided in paragraphs (d) and (e) of this section, 
the provisions of Subpart B apply to the total sound produced by such 
motor vehicles when operating under such conditions, including the sound 
produced by auxiliary equipment mounted on such motor vehicles.
    (d) The provisions of Subpart B do not apply to auxiliary equipment 
which is normally operated only when the transporting vehicle is 
stationary or is moving at a speed of 5 miles per hour or less. Examples 
of such equipment include, but are not limited to, cranes, asphalt 
spreaders, ditch diggers, liquid or slurry pumps, air compressors, 
welders, and trash compactors.
    (e) The provisions of Subpart B do not apply to warning devices, 
such as horns and sirens; or to emergency equipment and vehicles such as 
fire engines, ambulances, police vans, and rescue vans, when responding 
to emergency calls; or to snow plows when in operation.
    (f) The provisions of Sec. 202.20(a) and Sec. 202.21(a) of Subpart B 
apply only to applicable motor vehicles manufactured prior to the 1986 
model year.
    (g) The provisions of Sec. 202.20(b) and Sec. 202.21(b) apply to all 
applicable motor vehicles manufactured during or after the 1986 model 
year.

[39 FR 38215, Oct. 29, 1974, as amended at 51 FR 852, Jan. 8, 1986]