[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: 49CFR234.253]

[Page 492]
 
                        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. 234.253  Flashing light units and lamp voltage.

    (a) Each flashing light unit shall be inspected when installed and 
at least once every twelve months for proper alignment and frequency of 
flashes in accordance with installation specifications.
    (b) Lamp voltage shall be tested when installed and at least once 
every 12 months thereafter.
    (c) Each flashing light unit shall be inspected for proper 
visibility, dirt and damage to roundels and reflectors at least once 
each month.