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Strategies for energy efficiency of rail freight transportation

Rail Freight transportation, although energy efficient in comparison to other modes of freight transportation, still has significant potentials for reducing energy use. At the Institute for Transport Planning and Systems (IVT), a research was carried out to identify promising strategies for reducing energy use in Switzerland’s rail freight sector. The results highlighted the need for further research in the network and operational processes, which are the current subjects of IVT’s ongoing research projects in this field.

Although rail freight is generally recognized as an energy-optimal solution for freight transportation, there remain many opportunities to improve its energy efficiency. A recent work conducted at the IVT identifies the main effective strategies for implementing and improving energy efficiency of rail freight transportation. In general, there are two types of energy used in the rail freight production processes: direct energy used for operations, and indirect energy (often called grey energy) used for the production and maintenance of infrastructure and rolling stock. The strategies for improving energy efficiency of rail freight transport can be classified into short-term and long-term categories. Long-term strategies include rolling stock and infrastructure improvements which depend on the long innovation cycles in rolling stock and construction; currently, main studied measures for reducing energy in this area focus on application of electrified networks in the rail sector and the recovery of braking energy using electric brakes. Short-term strategies result in increased energy efficiency fairly quickly; these include scheduling and network design, where the interaction between freight and passenger trains can be re-planned, as well as improvement of operations in terms of deploying driver assistant systems, and adaptive train control.

In particular, rail freight can take high advantages from optimized planning & operation processes. Optimization of freight traffic circulation and freight train motion can bring undisputable benefits to the entire system. Unlike passenger trains, freight trains do not have strong constraints on departure and arrival times, and Origin-Destination paths can be modified according to traffic conditions and/or specific needs. Benefits are evident; freight train rescheduling in low demand hours or rerouting on different paths with less train circulation can increase voltage regularity. Moreover, the ride regularity increases as a result, leading to fewer unplanned stops and the possibility to optimize train speed profiles in an energy efficient way.

Currently, the ongoing research at IVT aims at filling this gap in the energy consumption of rail freight sector. The main target is to define energy efficiency strategies for freight trains through an integrated approach that consider optimization of network, rescheduling procedures, and speed profiles.

Dr. Valerio de Martinis, Dr. Mahnam Saeednia, and Dr. Dirk Bruckmann are scientific collaborators at the Institute for Transport Planning and Systems (IVT), ETH Zürich.

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Questo contributo è stato pubblicato nella seguente newsletter:

24 | Dezember 2014: Energie(wende)

  • Sharing is Saving: How collaborative mobility can reduce the impact of energy consumption for transportation
  • Quantifying long-term evolution of intra-urban spatial interactions
  • Electric Vehicle Simulation
  • Strategies for energy efficiency of rail freight transportation
  • Visuell-akustische Simulationen zur umfassenderen Standortevaluation von Windparks
  • Die Rolle der Raumplanung bei der Transformation der elektrischen Energieversorgung
Kurzmeldung
  • Elektrifizierung des nicht-spurgeführten städtischen öffentlichen Verkehrs – Ein betrieblicher Systemvergleich
  • 3D GIS zur Planung von elektrischen Versorgungsnetzen
  • Der Raum im Städtebau 1890–1930: Positionen in Theorie und Praxis
  • Zernez Energia 2020 gewinnt Sonderpreis
  • Urbane Profile
  • Die Systematisierung städtebaulichen Wissens: Eine wissenschaftsgeschichtliche Untersuchung städtebaulicher Manuale in der Gründungsphase der Disziplin Städtebau (1875-1930)
  • The Public Spectacle
Publikationen
  • Shape Grammars Overview and Assessment for Transport and Urban Design – Review, Terminology, Assessment, and Application
  • Partial proportional odds model: An alternate choice for analyzing pedestrian crash injury severities
  • The City as Resource
  • Effects of non-aeronautical activities at airports on the public transport access system: A case study of Zurich Airport
  • Siedlungsflächenmanagement Schweiz. Problemorientierte Flächenübersichten als zentrale Grundlage für eine Siedlungsentwicklung nach innen
  • Enzyklopädie zum gestalteten Raum. Im Spannungsfeld zwischen Stadt und Landschaft
  • Back to Form. Landscape Architecture and Representation in Europe after the Sixties
  • Landschaft als Wunderkammer. Fragen nach einer Haltung. / Landscape as a Cabinet of Curiosities. In Search of a Position

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Prof. Dr. Bryan T. Adey
Prof. Dr. Kay W. Axhausen
Prof. Dr. Tom Avermaete
Prof. Maria Conen
Prof. Dr. Francesco Corman
Dr. Jennifer Duyne Barenstein
Prof. Teresa Galí-Izard
Prof. Dr. Adrienne Grêt-Regamey
Prof. Dr. Guillaume Habert
Prof. Dr. David Kaufmann
Prof. Hubert Klumpner
Dr. Anastasios Kouvelas
Prof. Freek Persyn
Prof. Dr. Christian Schmid
Prof. Milica Topalovic
EiR PD Dr. Joris Van Wezemael
Prof. em Dr. h. c. Günther Vogt
ETH Wohnforum – ETH CASE

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