[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR236.107]

[Page 548]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 236_RULES, STANDARDS, AND INSTRUCTIONS GOVERNING THE INSTALLATION, 
 
              Subpart A_Rules and Instructions: All Systems
 
Sec. 236.107  Ground tests.

    (a) Except as provided in paragraph (b) of this section, a test for 
grounds on each energy bus furnishing power to circuits, the functioning 
of which affects the safety of train operation, shall be made when such 
energy bus is placed in service, and shall be made at least once every 
three months thereafter.
    (b) The provisions of this rule shall not apply to track circuit 
wires, common return wires of grounded common single-break circuits, or 
alternating current power distribution circuits grounded in the interest 
of safety.

[49 FR 3384, Jan. 26, 1984]