ALTRIOS - Advanced Locomotive Technology and Rail Infrastructure Optimization System

Jason Lustbader, Chad Baker, Grant Payne, Nicholas Reinicke, Kandler Smith, Matt Bruchon, Alicia Birky, Tyler Dick, Geordie Roscoe, Steven Shi, Steven Fritz, Garrett Anderson, Chris Hennessy, Corey Pasta, Mike Swaney, Allen Doyel, Nathan Williams, Matthew Duncan

Research output: NRELPresentation


The Advanced Locomotive Technology and Rail Infrastructure Optimization System (ALTRIOS) is a unique, fully integrated, open-source software tool to evaluate strategies for deploying advanced locomotive technologies and associated infrastructure for cost-effective decarbonization. ALTRIOS simulates energy conversion and storage dynamics, locomotive and train dynamics, meet-pass planning (detailed train timetabling), and freight-demand-driven train scheduling in a Pareto optimization. Because new locomotives represent a significant long-term capital investment and new technologies must be thoroughly demonstrated before deployment, this tool provides guidance on the risk/reward tradeoffs of different technology rollout strategies. An open, integrated simulation tool will be invaluable for identifying future research needs and making decisions on technology development, routes, and train selection. ALTRIOS development is a collaboration between NREL, the University of Illinois Urbana-Champaign (UIUC) RailTEC, Southwest Research Institute (SwRI), and BNSF.
Original languageAmerican English
Number of pages22
StatePublished - 2022

Publication series

NamePresented at the Railroad Environmental Conference (RREC), 2-3 November 2022, Urbana, Illinois

NREL Publication Number

  • NREL/PR-5400-84507


  • locomotive
  • locomotive technologies
  • meet-pass planning
  • rail decarbonization
  • railroad


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