[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: 49CFR234.259]

[Page 626]
 
                        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.  234.259  Warning time.

    Each crossing warning system shall be tested for the prescribed 
warning time at least once every 12 months and when the warning system 
is modified because of a change in train speeds. Electronic devices that 
accurately determine actual warning time may be used in performing such 
tests.