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52550
  
  

  1
Sep
1973
Technical Reports
Grade Crossing Protection in High-Speed, High-Density, Passenger-Service Rail Corridors
Author
          John B. Hopkins

Subject
                    Grade Crossing Technology,
                    Grade Crossings,
                    High-Speed Passenger Rail,
                    Highway-Rail Grade Crossing Warning Systems


**Abstract:** This report examines special aspects of grade crossing protection for operation of high-speed passenger trains in rail corridors where complete grade separation isn't possible...
Report Number
              FRA-ORD&D-74-l4

  Office
              RDI-23
    1
Jun
1971
Technical Reports
Technological Innovation in Grade Crossing Protective Systems
Author
          John B. Hopkins and Morrin E. Hazel

Subject
                    Grade Crossing Technology,
                    Highway-Rail Grade Crossings,
                    Signal and Train Control

**Keywords:** train detection; microwave telemetry
**Abstract:** This study describes limitations of innovative grade crossing protective systems (namely, cost) and provides guidelines for developing and using innovative systems.
Office
              RDI-23
    1
Oct
1969
Technical Reports
A Program Definition Study for Rail-Highway Grade Crossing Improvement
Author
          David W. Schoppert

Subject
                    Grade Crossing Technology,
                    Highway-Rail Grade Crossing Warning Systems,
                    Highway-Rail Grade Crossings

**Keywords:** protective devices; train operating costs; net benefits
**Abstract:** This study describes the status of grade crossing inventories and improvement programs, assesses the cost of crossing improvements, and develops a 5-year research program.
Report Number
              FRA-RP-70-2

  Office
              RDI-23

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