[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR227.113]

[Page 393]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 227_OCCUPATIONAL NOISE EXPOSURE--Table of Contents
 
 Subpart B_Occupational Noise Exposure for Railroad Operating Employees.
 
Sec.  227.113  Noise operational controls.

    (a) Railroads may use noise operational controls at any sound level 
to reduce exposures to levels below those required by Table A-1 of 
appendix A of this part.
    (b) Railroads are encouraged to use noise operational controls when 
employees are exposed to sound exceeding an 8-hour TWA of 90 dB(A).