[Code of Federal Regulations]

[Title 49, Volume 4]

[Revised as of October 1, 2005]

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

[CITE: 49CFR234.231]



[Page 574]

 

                        TITLE 49--TRANSPORTATION

 

       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 

                             TRANSPORTATION

 

PART 234_GRADE CROSSING SIGNAL SYSTEM SAFETY--Table of Contents

 

             Subpart D_Maintenance, Inspection, and Testing

 

Sec. 234.231  Fouling wires.



    Each set of fouling wires in a highway-rail grade crossing train 

detection circuit shall consist of at least two discrete conductors. 

Each conductor shall be of sufficient conductivity and shall be 

maintained in such condition to ensure proper operation of the train 

detection apparatus when the train detection circuit is shunted. 

Installation of a single duplex wire with single plug acting as fouling 

wires is prohibited. Existing installations having single duplex wires 

with a single plug for fouling wires may be continued in use until they 

require repair or replacement.