2.1500—Purpose and scope.
         The purpose of this subpart is to provide for simplified, legislative hearing procedures to be used, at the Commission's sole discretion, in:
    
    
        
        (a) 
         Any design certification rulemaking hearings under subpart B of  part 52 of this chapter that the Commission may choose to conduct; and
    
    
        
        (b) 
         Developing a record to assist the Commission in resolving, under  § 2.335(d), a petition filed under  § 2.335(b).