[Code of Federal Regulations]

[Title 49, Volume 5]

[Revised as of October 1, 2005]

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

[CITE: 49CFR325.91]



[Page 17-18]

 

                        TITLE 49--TRANSPORTATION

 

                      DEPARTMENT OF TRANSPORTATION

 

PART 325_COMPLIANCE WITH INTERSTATE MOTOR CARRIER NOISE EMISSION STANDARDS

--Table of Contents

 

                   Subpart G_Exhaust Systems and Tires

 

Sec. 325.91  Exhaust systems.





    A motor vehicle does not conform to the visual exhaust system 

inspection requirements, 40 CFR 202.22, of the Interstate Motor Carrier 

Noise Emission Standards, if inspection of the exhaust system of the 

motor vehicle discloses that the system--



[[Page 18]]



    (a) Has a defect which adversely affects sound reduction, such as 

exhaust gas leaks or alteration or deterioration of muffler elements, 

(small traces of soot on flexible exhaust pipe sections shall not 

constitute a violation of this subpart);

    (b) Is not equipped with either a muffler or other noise dissipative 

device, such as a turbocharger (supercharger driven by exhaust gases); 

or

    (c) Is equipped with a cut-out, by-pass, or similar device, unless 

such device is designed as an exhaust gas driven cargo unloading system.