[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: 49CFR234.227]

[Page 490]
 
                        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. 234.227  Train detection apparatus.

    (a) Train detection apparatus shall be maintained to detect a train 
or railcar in any part of a train detection circuit, in accordance with 
the design of the warning system.
    (b) If the presence of sand, rust, dirt, grease, or other foreign 
matter is known to prevent effective shunting, a railroad shall take 
appropriate action under Sec. 234.105, ``Activation failure,'' to 
safeguard highway users.