Resarch areas

The mortality cost of particulate matter due to emissions in the Stockholm area – an investigation into harmfulness, sources and the geographical dimension of their impact

Year:
2009
VTI-code:
R635A

Authors: Robert Bergström , Kristina Eneroth , Bertil Forsberg , Christer Johansson , Lena Nerhagen

It has long been recognized that emissions from traffic have a negative impact on human health. In recent years there has been emerging consensus that the main influence is due to particulate matter. From an economic point of view these negative effects are external costs caused by traffic that, if not accounted for in decision making regarding transport, will result in a non-optimal allocation of resources leading to welfare losses. To be able to implement road pricing measures, but also for the evaluation of other control measures through benefit-cost analysis, information on the external ...

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Research area

Environment
Transport economics

  • Published: 2009-01-28
  • VTI-code: R635A

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The composition and use of the Swedish car fleet. Formulation of a forecasting system

Year:
2008
VTI-code:
R518A

Authors: Åsa Forsman , Inger Engström

Model-based forecasts of future emissions are of great importance for analysing and comparing different strategies to reach the Swedish transport policy objective concerning effect on climate and air pollution. The composition and use of the car fleet are important inputs to emission models, and the quality of the emission forecasts therefore depends on the quality of the car fleet forecasts.¨

Today, no Swedish national model system exists that provides all the important forecasts. The aim of this study has been to formulate such a system based on experiences with models described ...

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Research area

Environment

  • Published: 2008-04-01
  • VTI-code: R518A

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The effects of long and heavy trucks on the transport system. Report on a government assignment

Year:
2008
VTI-code:
R605

Authors: Urban Björketun , Ulf Hammarström , Mattias Haraldsson , Gunnar Lindberg , Inge Vierth , Mohammad-Reza Yahya , Mikael Ögren , Håkan Berell , Arne Carlsson , John McDaniel

Truck transportation with vehicles up to 25.25 meters in length and with a maximum
gross vehicle weight of 60 tonnes is permitted in Sweden and Finland. The standard in
the rest of the EU is 18.75 metres and 40 tonnes.
The Government has commissioned the Swedish National Road and Transport Research
Institute (VTI) to investigate what effects long trucks have for the transport system in
Sweden. We have interpreted the assignment as meaning that the effects of heavy trucks
are also to be described. The assignment includes analysing the competition between
road ...

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Research area

Traffic analysis
Environment
Transport system
Transport economics
Traffic safety

  • Published: 2008-02-01
  • VTI-code: R605

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The effects of long and heavy trucks on the transport system – report on a government assignment

Year:
2008
VTI-code:
R605A

Authors: Inge Vierth , Håkan Berell , John McDaniel , Mattias Haraldsson , Ulf Hammarström , Mohammad-Reza Yahya , Gunnar Lindberg , Arne Carlsson , Mikael Ögren , Urban Björketun

Truck transportation with vehicles up to 25.25 meters in length and with a maximum gross vehicle weight of 60 tonnes is permitted in Sweden and Finland. The standard in
the rest of the EU is 18.75 metres and 40 tonnes.

The Government has commissioned the Swedish National Road and Transport Research Institute (VTI) to investigate what effects long trucks have for the transport system in
Sweden. We have interpreted the assignment as meaning that the effects of heavy trucks are also to be described. The assignment includes analysing the competition between
road and rail ...

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Research area

Traffic analysis
Environment
Transport system
Transport economics
Traffic safety

  • Published: 2008-02-01
  • VTI-code: R605A

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Railway pollution – sources, dispersion and measures. A literature review.

Year:
2008
VTI-code:
R602

Authors: Göran Blomqvist , Mats Gustafsson , Karsten Håkansson , Johanna Lindeberg , Sören Nilsson-Påledal

Pollutants in the railway environment emanate both from emissions from the traffic and from the treatment of embankments to control weeds and prevent timber sleepers from rotting. During the last years particular attention has been paid to air pollution from rail traffic. High concentrations of inhalable particles (PM10) have been observed mainly in tunnel environments.

In this literature survey current knowledge has been compiled concerning railway pollutants, their sources, dispersion and possible measures to reduce pollution. Focus has been on electric rail traffic.

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Research area

Environment

  • Published: 2008-01-21
  • VTI-code: R602

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Effect of tire pressure on fuel consumption – methodology and results

Year:
2007
VTI-code:
R564

Authors: Per Jonsson

Information to motorists declares that the fuel consumption can be reduced by inflating tires to the correct pressure. However, few sources mention the methodology behind the estimates. On the other hand there are plentiful investigations on the extent of underinflated tires. The objective of this study is therefore to investigate what the real differrences in fuel consumption are between recommended pressure and a pressure 15 percent below the recommendation. Further, the objective is to investigate the precision of air pumps at service stations which represent the equipment motorists use to ...

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Research area

Environment

  • Published: 2007-08-16
  • VTI-code: R564

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Biofuels – A literature review

Year:
2007
VTI-code:
R563

Authors: Per Jonsson

Biofuels in the transport sector have been known as alternatives to gasoline and diesel for a long period of time. However, the use of these fuels in significant amounts has only recently commenced. The development in Sweden can be traced to a desire to decrease oil dependency and emissions of green house gases. Biofuels have the potential to contribute to that these goals are met.

Sweden’s national goal 2003 concerning the use of biofuels was 3 percent of all fuels in the road transport sector. The actual use reached 2.5 percent. Within the EU the goal is set to 5.75 percent by ...

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Research area

Environment

  • Published: 2007-06-29
  • VTI-code: R563

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