OpenTrack

OpenTrack
Name	OpenTrack
Developer	University of Stuttgart, ETH Zurich, Deutsche Bahn
Initial release	1999
Latest release	2024
Programming language	C++, Python
Operating system	Linux, Windows, macOS
License	GPL-compatible

OpenTrack OpenTrack is a computer simulation tool for rail transport systems, timetable analysis, and train dynamics. It is used by operators, infrastructure managers, research institutes, and rolling stock manufacturers to model scheduling, capacity, and interactions between trains, signalling, and infrastructure. The software serves as a bridge between theoretical research from universities and practical planning at agencies such as Deutsche Bahn, and it interfaces with standards and bodies like UIC and ERA.

Overview

OpenTrack models individual trains as agents that traverse a virtual representation of railway infrastructure consisting of tracks, signals, stations, and junctions. It integrates detailed vehicle dynamics with timetable constraints to predict delays, evaluate capacity, and test timetable variants. Common users include staff from Network Rail, SNCF, Swiss Federal Railways, research groups at ETH Zurich and TU Delft, and consulting firms working for ministries or transportation authorities. The tool is often compared alongside proprietary systems developed by companies such as Siemens and Alstom.

History

Development began in the late 1990s at the University of Stuttgart and expanded through collaborations with European rail operators and academic partners. Early versions focused on longitudinal train dynamics and timetable simulation; later releases added graphical editors, multi-threaded execution, and interfaces for data exchange. Major milestones include integration with standards promoted by the International Union of Railways (UIC) and adoption in studies commissioned by national ministries and the European Commission. Research papers from groups at ETH Zurich, TU Munich, and Chalmers University of Technology documented methodological advances and validated the software against field measurements.

Features and Functionality

OpenTrack provides modules for timetable editing, rolling stock parameterization, and microscopic simulation of train movements. It supports detailed vehicle models including traction, braking curves, and train control systems used by operators like Deutsche Bahn and SBB. The software can simulate timetable adherence, conflict detection at junctions, and platform occupation metrics used by planners at Network Rail and ProRail. Analytical outputs include delay propagation matrices, capacity indicators consistent with guidance from ERA and scenario comparisons used by consulting firms such as Atkins and Ramboll.

Architecture and Implementation

The core is implemented in C++, with scripting and batch processing available via Python bindings. The architecture separates a physical infrastructure model from operational rules and driver behavior modules, enabling reuse across national signalling systems such as those employed by ÖBB and DB Netz. Simulations run on desktop environments including Windows and Linux, and can be integrated into larger workflows with tools from vendors like Bentley Systems or research platforms at SINTEF. Data interchange follows common railway formats and can be adapted to XML-based schemas endorsed by bodies like UIC.

Applications and Use Cases

Planners use the software for timetable development for corridors such as the Rhine–Alpine Corridor and capacity studies for stations like Zurich Hauptbahnhof and Gare du Nord. Infrastructure managers employ it for knock-on delay analysis after incidents modelled similarly to case studies from London and Paris. Rolling stock manufacturers utilize the tool to assess energy consumption and adhesion for vehicles delivered to operators such as SNCF and SBB. Academics apply it in research on delay propagation, resilience, and timetable stability in journals associated with IEEE and Elsevier-published outlets.

Development and Community

The project benefits from contributions by university research groups, national railways, and consultants. Development discussions take place among contributors from institutions including University of Stuttgart, ETH Zurich, and companies that provide professional services to European Commission projects. Workshops and presentations featuring the tool appear at conferences like the World Conference on Transport Research and meetings of the International Association of Railway Operations Research. Training courses are offered by engineering consultancies and university continuing-education programs at institutions such as TU Delft.

Licensing and Availability

Distributed under a GPL-compatible licensing model, the software is available to academic users and commercial entities under varying terms that reflect contributions from partner organizations. Licensing arrangements have enabled adoption by public entities including Deutsche Bahn and research consortia funded by the European Commission. Binaries and source components are maintained by the core team with periodic releases aligned to research milestones and industry needs.

Category:Rail transport software Category:Simulation software