170.626—How does a tribe request a waiver of a Department of Transportation regulation?
               		
               	 	
               	 	
               	 	               	 	               	 	               	 	               	 	
               	 	
    
         A tribe must follow the procedures in ISDEAA, Title I, and  25 CFR 900.140-148 for self-determination contracts and Title IV,  25 CFR 1000.220-232 for tribal self-governance agreements. A courtesy copy of the request should be sent to the Secretary of Transportation at: 400 7th St., SW., HFL-1, Washington, DC 20590. When a waiver request is outside the Secretary's authority, the Secretary should forward the request to the Secretary of Transportation.