Resarch areas

Procurement and implementation of complex signaling systems – work processes and tools

Year:
2016
VTI-code:
R889

Authors: Ragnar Hedström , Mats Lindberg-Collin , Anders Lindahl , Gustaf Lindström , Kristina Löwenberg , Susanne Nilsson , Lars Pettersson , Sofia Ritzén

All rail traffic is subject to some type of control system and safety standards. In order to be able to operate a rail transport system in a safe, efficient, and secure manner, tracks and vehicles must be controlled by some kind of traffic management system. The signal system is a fundamental part of this system and is essential for safe rail transport operation. Signal systems are characterised by their great complexity.

The projects background is related to problems experienced by Stockholm Region’s Trafikförvaltningen/AB SL during the implementation of three major signaling ...

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Research area

Transport system

  • Published: 2016-04-13
  • VTI-code: R889

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Road Services in Europe: Interviews with road authorities

Year:
2016
VTI-code:
N6-2016

Authors: Henriette Wallén Warner , Christopher Patten

This paper reports on an assignment commissioned by the Swedish Transport Administration (TRV). The assignment was to map how other national road authorities in Europe use – describe, implement and follow up – on the term and concept of a road service.

After a literature study, eight European countries (Cyprus, Finland, Iceland, Norway, Luxemburg, Croatia, the Netherlands and Germany) were contacted. The results suggest that in Europe, just like in Sweden, the road authorities develop direct, indirect and other functions needed but the concept of road service is not used.
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Research area

Transport system

  • Published: 2016-03-30
  • VTI-code: N6-2016

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The Swedish railway freight market. Background material for the Committee Reviewing the Organisation of the Railway Sector

Year:
2015
VTI-code:
R874

Authors: Inge Vierth , Magnus Landergren

This report aims to describe how the Swedish rail freight market works and how it might develop in the future.

It has almost been two decades since the rail freight market was deregulated. The state owned former monopolist Green Cargo is still the dominant player, but since the deregulation a dozen firms have entered the market and continuously taken market shares. Since the deregulation the efficiency of the market has increased but the profitability has been low, especially during the last years. The transport performance on rail and the railway’s share of the total transport ...

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Research area

Transport system
Transport economics

  • Published: 2015-12-16
  • VTI-code: R874

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Electricity consumption of longer and heavier trains -– Summary of results, experiences and lessons learned from the demonstration project ELVIS

Year:
2015
VTI-code:
N13-2015

Authors: Inge Vierth , Joakim Ahlberg , Annelie Carlson , Jan-Erik Swärdh , Åsa Wikberg , Magnus Landergren

The ELVIS demonstration project aims to analyze how rail freight transports can be performed more efficiently. Hypotheses are that the transport efficiency can be improved by using longer and heavier freight trains and by implementing energy-related measures, and that there may be additional benefits for the companies and the society such as better utilization of the track capacity. This report summarizes the results and experiences from the three previously produced sub reports.

In terms of both energy efficiency and overall efficiency for the rail transports researchers, ...

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Research area

Environment
Transport system

  • Published: 2015-04-16
  • VTI-code: N13-2015

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Predictions of the share that walk or bicycle to work: travel surveys combined with register based data with high geographic resolution

Year:
2014
VTI-code:
N20-2014

Authors: Gunnar Isacsson

The Swedish Transport Administration has recently developed a tool (“GC-kalk”) for assessing investments in the infrastructure for walking and bicycling. These assessments are inter alia based on the number of individuals that walk or bicycle before the investment.

This report uses the Swedish national travel survey combined with register based (administrative) data with high geographic resolution to generate predictions of the number of people walking or cycling to work in a small geographic area. The basic problem is that the register based material that includes the entire ...

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Research area

Traffic analysis
Transport system

  • Published: 2014-09-19
  • VTI-code: N20-2014

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Energy measurement on timber train transports on the route Mora–Borlänge–Gävle

Year:
2014
VTI-code:
R829

Authors: Joakim Ahlberg

The report analyze how the energy of a freight train is due to the gross weight of the train, the number of stops the train makes and drivers’ driving style.

Findings were that driving style plays a major role, between drivers the different in net energy used is up to 20 percent. Furthermore, there is differences in energy use connected to (gross) weights on the train, but it is a bit unclear how the results should be interpreted due to the lack of quality of the data. It will takes more measurements to be able to say anything more definite. The same applies to the number of stops ...

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Research area

Transport system

  • Published: 2014-09-02
  • VTI-code: R829

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Summary of results, experiences and lessons learned from ELVIS demonstration project for longer and heavier trains

Year:
2014
VTI-code:
N25-2014

Authors: Inge Vierth

The ELVIS demonstration project aims to analyze how rail freight transports can be performed more efficient. This report (VTI notat 25-2014) summarizes the results and experiences from the three previously produced sub reports.

In terms of both energy efficiency and overall efficiency for the rail transports researchers, companies and the Swedish Transport Administration conclude that there is a big need to secure the quality of the data that is produced. This applies to information about electricity consumption and the factors that possibly affect electricity consumption per ...

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Research area

Environment
Transport system

  • Published: 2014-08-21
  • VTI-code: N25-2014

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Competition between land based modes and sea transports for Swedish freight transports

Year:
2014
VTI-code:
R822

Authors: Inge Vierth , Lina Jonsson , Rune Karlsson , Megersa Abate

The project aims to investigate the competition between road and rail transports on one hand and the sea transports on the other.

Shippers choose different unimodal or multimodal transport chains to carry various types of goods in, to and from Sweden. Transport prices are a key factor when choosing the transport chain. Sea transport prices are set on the world market and fluctuate more than prices for road and rail transports. Imbalances in transport flows also affect the intermodal competition, in particular for transports to/from mainland Europe.

According to the ...

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Research area

Transport system
Transport economics

  • Published: 2014-06-18
  • VTI-code: R822

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Traffic safety and perceptions of safety in the interaction between street environment and a more energy efficient lighting

Year:
2014
VTI-code:
R816

Authors: Annika Jägerbrand

LED lighting or Light Emitting Diodes is a type of light source that is starting to be used in larger scale on pedestrian and bicycle lanes in Sweden and elsewhere. The project's aim was to study the traffic safety aspects of new lights and the interaction with the street environment for pedestrians and cyclists.

This project investigated the lighting conditions, effects on cyclists, and the interactions between lighting, traffic safety, street environmental conditions and/or other effects such as perceptions of safety for three different light sources (mercury vapour 125W, ...

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Research area

Environment
Transport system
Traffic safety

  • Published: 2014-04-23
  • VTI-code: R816

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Sustainable transport – opportunities and barriers

Year:
2014
VTI-code:
R797

Authors: Sonja Forward

This report describes the results of a survey including 1.133 people using a questionnaire covering factors that affect traveller´s intentions to cycle and how to get the "reluctant" rider to start cycling.

In the survey, participants were answering different questions based on two different theories (Theory of planned behaviour and The transtheoretical model of change) and were asked to link them to a journey they usually make in a week. Results showed that distance travelled was an important factor influencing modal choice although this was not the only one since attitude, ...

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Research area

Transport system

  • Published: 2014-03-13
  • VTI-code: R797

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