Resarch areas

Simulator sickness – causes, consequences and measures. A literature review

Year:
2009
VTI-code:
R587

Authors: Per Henriksson

The knowledge overview gives an account of some theories about why simulator sickness occurs, describes how the symptoms can manifest themselves, discusses what factors can cause a feeling of sickness (simulator properties, scenario content and individual characteristics), mentions various methods estimating and measuring simulator sickness, and gives proposals regarding measures for reducing simulator sickness.

There are many conceivable factors that can be behind the phenomenon, and which can also act in combination. One theory which has been prevalent, the conflict theory, ...

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Research area

People in the transport system

  • Published: 2009-06-24
  • VTI-code: R587

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Distraction and drowsiness – a field study. Technical report

Year:
2009
VTI-code:
R638A

Authors: Katja Kircher , Fredrich Claezon , Albert Kircher

The main goal of the distraction and drowsiness field study was to evaluate a system for detecting driver distraction and drowsiness. This report focuses on the system implementation and the algorithms detecting distraction and drowsiness. A previous report dealt with the background of driver distraction, the results of the study are presented in a further report.

A vehicle was instrumented with video cameras, an automatic eye tracker and GPS receivers. Further data were read from the CAN bus of the car. The data were logged continuously with high frequency as long as the ignition ...

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Research area

People in the transport system

  • Published: 2009-04-03
  • VTI-code: R638A

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Results of a field study on a driver distraction warning system

Year:
2009
VTI-code:
R639A

Authors: Christer Ahlström , Katja Kircher , Albert Kircher

An extended field study on driver distraction and drowsiness was conducted in an instrumented vehicle, which was equipped with an eye tracker and other sensors. This report focuses on the findings concerning driver distraction. Seven participants used the car just as their own car during a period of one month each. During the baseline phase, which comprised of the first ten days of the trial the distraction warnings were deactivated. During the treatment phase, consisting of the remaining 20 days, the warnings were activated, meaning that the driver received a vibration in the seat whenever ...

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Research area

People in the transport system

  • Published: 2009-04-03
  • VTI-code: R639A

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Evaluation of local ITS solutions in urban areas

Year:
2009
VTI-code:
R646

Authors: Christer Ahlström , Anna Anund , Mohammad-Reza Yahya , Sverker Almqvist

This study investigates the acceptance and effect of variable message signs (VMS). Two different systems were evaluated: one where a speed limit sign was combined with a message to slow down and another where a speed limit sign was combined with flashing lights. Both VMS were activated (lit up) if the passing vehicle was driving too fast as it approached the speed limit sign. The aim of the study was to evaluate if the use of a variable speed limit sign gave rise to lower speeds. The same approach was used in order to evaluate the effect of an additional message system or flashing lights. Go to the VTI publication

 
 

Research area

People in the transport system
Traffic safety

  • Published: 2009-03-24
  • VTI-code: R646

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Further training for older drivers – an overview

Year:
2009
VTI-code:
N12-2009

Authors: Lena Levin , Jonna Nyberg , Björn Peters

In the future the number of the older people, and older car drivers, will increase markedly. It is of great importance that older people have the possibility to retain their idenpendent mobility for as long as possible. However, old people have an increased risk to get severely injured or killed in a traffic accident because they are frailer due to their age. Getting older may also mean for example impaired hearing, eyesight and ability to react, something that might create problems for older car drivers in complex traffic situations. Degrading ablities often develop slowly and changes can be ...

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Research area

People in the transport system

  • Published: 2009-03-06
  • VTI-code: N12-2009

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Mobility service to day care and daily activities in a Swedish municipality

Year:
2008
VTI-code:
N27-2008

Authors: Rein Schandersson

In 2003, the municipality of Lidköping commisioned VTI to carry out an investigation of trips in connection with daily care and daily activities for disabled persons and propose improvements that can contribute to better fulfilment of decided goals.

The investigation focused on conditions related to how trips are carried out, the governing rules and the practical consequences of the rules. Data and statistics on trips were supplied by Västtrafik, the provider of the mobility services. Most of the investigation was devoted to on-site interviews with staff involved in daily ...

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Research area

People in the transport system

  • Published: 2008-11-13
  • VTI-code: N27-2008

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Pilot's working environment from a gender equality perspective – a literature study

Year:
2008
VTI-code:
R627

Authors: Jessica Berg , Jonna Nyberg , Jane Summerton

The aim of this literature study has been to summarize research results concerning gender equality among pilots in their daily working environment both from a Swedish and international perspective. The aim has also been to identify important fields of interest for further research.

In Sweden, the research concerning the working environment of pilots from a gender equality perspective is almost non-existent. In the international literature, there are studies foremost concerning the psycho-social working environment, but the physical working environment has been studied from a gender ...

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Research area

People in the transport system

  • Published: 2008-10-27
  • VTI-code: R627

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Driver distraction – A review of the literature

Year:
2007
VTI-code:
R594A

Authors: Katja Kircher

Until recently there was no generally accepted definition of distraction, and the most prominent discordance was that some researchers included cognitive inattention in the concept, while others reserved the term solely for visual distraction. In 2005 a large part of the First International Conference on Distracted Driving was dedicated to agreeing on a definition. The resulting definition clearly excludes long-term impairments like fatigue and alcohol intoxication, and states that the attention must be drawn away from driving towards something else in order to qualify as ”distraction”. Go to the VTI publication

 
 

Research area

People in the transport system

  • Published: 2007-10-29
  • VTI-code: R594A

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The Elderly in the transport system – mobility, design and training problems

Year:
2007
VTI-code:
R593

Authors: Tania Dukic Willstrand , Satu Heikkinen , Per Henriksson , Lena Levin , Astrid Linder , Selina Mårdh , Sara Nygårdhs , Björn Peters , Benny Nielsen

The elderly in the transport system – mobility, design and training problems, is a literature study with a problem-formulating purpose compiled by a group of researchers with different specializations and experiences from numerous divisions at VTI. The purpose is to give an overview of previous research at VTI and similar research at other research institutes and universities/colleges as well as to indicate a number of directions for future research on the mobility of the elderly and the elderly as actors within the transport system.

The report has a clear, multidisciplinary ...

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Research area

People in the transport system

  • Published: 2007-10-11
  • VTI-code: R593

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Fatigue at sea – A field study in Swedish shipping

Year:
2007
VTI-code:
R586A

Authors: Mats Gillberg , Margareta Lützhöft , Birgitta Thorslund , Albert Kircher

The purpose of this study was to collect data about the fatigue level of bridge watch keepers to use for revising earlier sleep models, and devise innovative solutions for the shipping industry.

Data collection included interviews with shipping companies and a field study onboard 13 cargo vessels. 32 participants took part in representing two watch systems; 2-watch and 3-watch. Subjective sleepiness and stress estimations were performed once every hour. EOG was used to record eye movement behaviour. Reaction time test was made to examine performance.

3-watch ...

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Research area

People in the transport system

  • Published: 2007-09-28
  • VTI-code: R586A

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