[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR234.243]

[Page 477]
 
                        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. 234.243  Wire on pole line and aerial cable.

    Wire on a pole line shall be securely attached to an insulator that 
is properly fastened to a cross arm or bracket supported by a pole or 
other support. Wire shall not interfere with, or be interfered with by, 
other wires on the pole line. Aerial cable shall be supported by 
messenger wire. An open-wire transmission line operating at voltage of 
750 volts or more shall be placed not less than 4 feet above the nearest 
cross arm carrying active warning system circuits.