[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: 40CFR202.20]

[Page 81-82]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 202--MOTOR CARRIERS ENGAGED IN INTERSTATE COMMERCE--Table of Contents
 
        Subpart B--Interstate Motor Carrier Operations Standards
 
Sec. 202.20  Standards for highway operations.


    (a) No motor carrier subject to these regulations shall operate any 
motor vehicle of a type to which this regulation

[[Page 82]]

is applicable which at any time or under any condition of highway grade, 
load, acceleration or deceleration generates a sound level in excess of 
86dB(A) measured on an open site with fast meter response at 50 feet 
from the centerline of lane of travel on highways with speed limits of 
35 MPH or less; or 90 dB(A) measured on an open site with fast meter 
response at 50 feet from the centerline of lane of travel on highways 
with speed limits of more than 35 MPH.
    (b) No motor carrier subject to these regulations shall operate any 
motor vehicle of a type to which this regulation is applicable which at 
any time or under any condition of highway grade, load, acceleration or 
deceleration generates a sound level in excess of 83 dB(A) measured on 
an open site with fast meter response at 50 feet from the centerline of 
lane of travel on highways with speed limits of 35 MPH or less; or 87 
dB(A) measured on an open site with fast meter response at 50 feet from 
the centerline of lane of travel on highways with speed limits of more 
than 35 MPH.

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