215.3—Application.
        
        (a) 
         Except as provided in paragraphs (b) and (c) of this section, this part applies to each railroad freight car in service on:
    
    
    
        
        (2) 
         Any other standard gage track while the car is being operated by, or is otherwise under the control of, a railroad.
    
    
    
    
    
    
    
    
        
        (3) 
         Maintenance-of-way equipment (including self-propelled maintenance-of-way equipment) if that equipment is not used in revenue service and is stenciled in accordance with  § 215.305 of this part.
    
    
        
        (4) 
         Operated in a passenger train and that is inspected, tested, maintained, and operated pursuant to the requirements contained in  part 238 of this chapter.
    
    [44 FR 77340, Dec. 31, 1979, as amended at 65 FR 41305, July 3, 2000]