[Code of Federal Regulations]

[Title 40, Volume 24]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 40CFR202.21]



[Page 84]

 

                   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.  202.21  Standard for operation under stationary test.



    (a) No motor carrier subject to these regulations shall operate any 

motor vehicle of a type to which this regulation is applicable which 

generates a sound level in excess of 88 dB(A) measured on an open site 

with fast meter response at 50 feet from the longitudinal centerline of 

the vehicle, when its engine is accelerated from idle with wide open 

throttle to governed speed with the vehicle stationary, transmission in 

neutral, and clutch engaged. This section shall not apply to any vehicle 

which is not equipped with an engine speed governor.

    (b) No motor carrier subject to these regulations shall operate any 

motor vehicle of a type to which this regulation is applicable which 

generates a sound level in excess of 85 dB(A) measured on an open site 

with fast meter response at 50 feet from the longitudinal centerline of 

the vehicle when its engine is accelerated from idle with wide open 

throttle to governed speed with the vehicle stationary, transmission in 

neutral, and clutch engaged. This paragraph shall not apply to any 

vehicle which is not equipped with an engine speed governor.



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