[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR325.27]

[Page 756]
 
                        TITLE 49--TRANSPORTATION
 
        CHAPTER III--FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION,
                      DEPARTMENT OF TRANSPORTATION
 
PART 325--COMPLIANCE WITH INTERSTATE MOTOR CARRIER NOISE EMISSION STANDARDS--Table of Contents
 
                       Subpart C--Instrumentation
 
Sec. 325.27  Use of a windscreen.

    A properly installed windscreen, of the type recommended by the 
manufacturer of the Sound Level Measurement System, shall be used during 
the time that noise emission measurements are being taken.