If you have been issued a summons by the Metropolitan Transportation Authority (MTA), you can get a disposition letter from the NYC Transit Adjudication Bureau.  
A $10 fee, government ID, and Social Security Card will be required.
The Bureau is located at 29 Gallatin Place, 3rd Floor, in Brooklyn.
                  
                  
                  
                  
                  
                  
                 
                
                           
            
              
                 
              
              
                 
                
                
              
                
                
                
                  
                  
                  
                  
                  
                    
                    
                                           
                      
                        - Agency: Metropolitan Transportation Authority
 
                        - Division: Transit Adjudication Bureau
 
                      
                      
                      
                        - Phone Number: (347) 643-5805
 
                      
                      
                        - Business Hours: Monday - Friday: 8 AM - 5 PM