Impact of passenger trains in double track networks

Samuel L. Sogin, Christopher P.L. Barkan, Yung Cheng Lai, Mohd Rapik Saat

Research output: Chapter in Book/Report/Conference proceedingConference contribution


North American freight railroads are expected to experience increasing capacity constraints across their networks. To help plan for this increased traffic, railroads use simulation software to analyze the benefits of capacity expansion projects. Simultaneous operation of heterogeneous traffic further increases delay relative to additional homogenous traffic. Additional passenger trains can cause more delays to freight trains than additional freight trains. Rail Traffic Controller (RTC) was used to run simulations with varying mixes of unit freight and passenger trains operating at various speeds on a double track configuration. Basic assumptions on the relative difference in priority between train types lead to drastically different results on the impact of adding higher priority trains. This assumption dictates whether the track in the opposing direction should be used for overtake maneuvers. Also, higher speed differentials between train types can result in higher delays as faster trains catch up to slower trains more quickly. These analyses will help planners improve their understanding of the tradeoff in capacity due to operation of different types of trains at different priorities and speeds.

Original languageEnglish (US)
Title of host publication2012 Joint Rail Conference, JRC 2012
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages6
ISBN (Print)9780791844656
StatePublished - 2012
Event2012 Joint Rail Conference, JRC 2012 - Philadelphia, PA, United States
Duration: Apr 17 2012Apr 19 2012

Publication series

Name2012 Joint Rail Conference, JRC 2012


Other2012 Joint Rail Conference, JRC 2012
Country/TerritoryUnited States
CityPhiladelphia, PA

ASJC Scopus subject areas

  • Transportation


Dive into the research topics of 'Impact of passenger trains in double track networks'. Together they form a unique fingerprint.

Cite this