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            Performance of Prototype No. 20 Frogs in Revenue Service
      

      
  Document Series
              Research Results


      
  Author
          Federal Railroad Administration


      
Report Number
              RR 22-17

  Office
              RDI-21


      Subject
                    Track


      
  Keywords
              Special trackwork, turnout frogs, frog point, frog wing, HAL


      

      
      
              
                  
      
              
  Document
              Prototype No. 20 Frog Performance.pdf (390.13 KB)

      
              Transportation Technology Center, Inc. (TTCI) evaluated the performance of several No. 20 fixed-point frogs on Norfolk Southern Railway (NS) in Kentucky. This effort was part of the Heavy Axle Load (HAL) Revenue Service Test Program jointly supported by the Federal Railroad Administration (FRA) and Association of American Railroads (AAR). Research was conducted between 2017 and 2022.
      
            
      
      
              Last updated: Friday, September 9, 2022 U.S. DEPARTMENT OF TRANSPORTATION

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