(a) 
         Except as provided in paragraph (b) of this section, this part applies to all railroads and contractors and subcontractors of railroads.
     
    
        
        (b) 
         This part does not apply to:
     
    
        
        (1) 
         A railroad or a contractor or subcontractor of a railroad that operates only on track inside an installation which is not part of the general railroad system of transportation; or
     
    
        
        (2) 
         Rapid transit operations in an urban area that are not connected with the general railroad system of transportation.
     
    [74 FR 25345, May 27, 2009]