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Shared Use of Railroad Infrastructure with Noncompliant Public Transit Rail Vehicles: A Practitioner's Guide (2009) / Chapter Skim
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Appendix 9 - Shared-Track Configuration and Operational Alternatives
Pages 107-109

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From page 107...
... 1 Strict Temporal Separation Track 2 Spatial Separation 3 Concurrent Single Track 4 Concurrent Double For concurrently shared double-track, the same Option 3 signal system would be required. Under this scenario, a freight train could pass an opposing light rail train at speed on adjacent tracks, increasing the risk of shifted-lading strikes.
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From page 108...
... It is primarily single track with two passing sidings to provide for bi-directional passenger operations. The light rail passenger service differs from Option 1 by having extended service hours earlier in the morning and later into the night.
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From page 109...
... Graphic representation of track occupancy by time of day and route segment for freight and passenger movements Traditional schedule "stringlines" Passenger Train Schedules Passenger Loading per train, time of day, daily trips, standees Track schematics and diagrams for each option Samples of formats and applications of these graphic presentations are included in Task 10 Hypothetical Case Study Report. may not have the flexibility to alter their receiving hours.
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Key Terms

  • passenger service
  • light rail
  • minute headways
  • information requirements
  • freight service

  • freight train
  • freight trains
  • train stop
  • freight activity
  • freight track

  • peak service
  • grade crossing
  • hours earlier
  • automatic train
  • requirements listed

  • crossing warning
  • late nights
  • passing sidings
  • grade crossings
  • passenger loading

  • rail passenger
  • extended service
  • primarily single
  • spatial separation
  • single track

  • major investment
  • waiver petition
  • temporal separation
  • separation track
  • ridership calculations


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