LRT Topics

About the initiative Localization Reference Train (LRT):

  • Localization Reference Train (LRT) is an initiative of several researchers dealing with research in the field of train-side positioning systems (train-borne localization).
  • The goal is a unified approach for the evaluation of new train positioning systems in R&D.
  • What we offer and what we work at: Train-side positioning sensors, data-sets and guidelines.
  • Download a summary about the LRT activities.

Why are train-side positioning systems of interest?

To ensure a safe journey for each train in a railway network, current command and control systems (CCS) utilize track-side localization methods. Although the established track-side positioning systems have proven to be working and reliable, they suffer from an inherent trade-off between track-capacity and cost. Train-side positioning systems are thought to help to overcome this fact, and by that making railway transportation much more efficient. However, so far there is no sensor set-up available meeting the demanding requirements for a fully train-side positioning system, both in the sense of accuracy as well as safety. This is why train-borne localization has gained interest in research recently.

Motivation of LRT – Data Sets, Sensors, Guidelines

To improve existing positioning approaches it is indispensable to evaluate them with the help of real measurement data. At this point many researchers and developers experience some difficulties because of the specialties of the railway domain. Safety concerns and operational constraints make it hard to install sensors and gather data on a regularly used train. Furthermore, freely usable test fields to gather meaningful data are not existent. To diminish the burden of these circumstances is the motivation which lead to the formation of the LRT initiative.

The LRT initiative has set itself to the goal of creating a platform for collecting and exchanging measurement data for the evaluation of train-side positioning systems. By combining forces the burden of collecting the necessary data on a regularly used train is diminished, all partners gain access to the same data and by that, are able to compare and improve their approaches faster.

The goals of the LRT initiative can be summarized as follows:


Control Methods and Robotics Laboratory
(TU Darmstadt)
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Geodetic Measuring Systems and Sensor Technology
(TU Darmstadt)
Institute of Measurement and Control Systems
(KIT, Karlsruhe)
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Institute for Traffic Safety and Automation Engineering
(TU Braunschweig)
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Institute of Automatic Control
(RWTH Aachen)
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Institute of Transportation Systems
(DLR, Braunschweig)
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