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            Broken Rail and Rollout Detection to Support QMB Operations
      

      
  Document Series
              Research Results


      
  Author
          Federal Railroad Administration


      
Report Number
              RR 21-21

  Office
              RDI-23


      Subject
                    Positive Train Control


      
  Keywords
              Quasi-Moving Block (QMB), next generation track circuit, NGTC, track circuit enhancements


      

      
      
              
                  
      
              
  Document
              RR_Broken Rail and Rollout Detection-A.pdf (434.56 KB)

      
              Transportation Technology Center, Inc. (TTCI) collaborated with a railroad advisory group to progress a track circuit concept that supports the Quasi-Moving Block (QMB) method of train control. TTCI performed proof-of-concept testing, capacity analysis, hazard analysis, and requirements development.
      
            
      
      
              Last updated: Tuesday, September 28, 2021 U.S. DEPARTMENT OF TRANSPORTATION

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