[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: 49CFR234.3]

[Page 485]
 
                        TITLE 49--TRANSPORTATION
 
       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 234--GRADE CROSSING SIGNAL SYSTEM SAFETY--Table of Contents
 
                           Subpart A--General
 
Sec. 234.3  Application.

    This part applies to all railroads except:
    (a) A railroad that exclusively operates freight trains only on 
track which is not part of the general railroad system of 
transportation;
    (b) Rapid transit operations within an urban area that are not 
connected to the general railroad system of transportation; and
    (c) A railroad that operates passenger trains only on track inside 
an installation that is insular; i.e., its operations are limited to a 
separate enclave in such a way that there is no reasonable expectation 
that the safety of the public--except a business guest, a licensee of 
the railroad or an affiliated entity, or a trespasser--would be affected 
by the operation. An operation will not be considered insular if one or 
more of the following exists on its line:
    (1) A public highway-rail crossing that is in use;
    (2) An at-grade rail crossing that is in use;
    (3) A bridge over a public road or waters used for commercial 
navigation; or
    (4) A common corridor with a railroad, i.e., its operations are 
within 30 feet of those of any railroad.