Sökning: "Statens väg- och transportforskningsinstitut"

Visar resultat 6 - 10 av 26 avhandlingar innehållade orden Statens väg- och transportforskningsinstitut.

  1. 6. The Transition Towards a Fossil Free Freight Transport Sector – Policy Evaluations and Effects of Proposed Policy Instruments

    Författare :Lina Trosvik; Johan Woxenius; Statens väg- och transportforskningsinstitut; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Maritime transport; Policy evaluation; Policy instruments; Scenario analyses; Freight transport; Evaluation criteria; Greenhouse gas emissions;

    Sammanfattning : The overall aim of this thesis is to improve the knowledge about how policy instruments can contribute to effective and efficient reductions of greenhouse gas emissions in the freight and maritime transport sectors. Paper I addresses this aim by analysing how policy evaluations contribute with information about whether policy instruments in the freight transport sector have been successful in achieving their targets and how to improve or correct already implemented ones. LÄS MER

  3. 7. Competition in Public Transport : Essays on competitive tendering and open-access competition in Sweden

    Författare :Andreas Vigren; Svante Mandell; Jan-Eric Nilsson; Nash Nash; Statens väg- och transportforskningsinstitut; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Public transport; Contract; Tender; Bus; Economic efficiency; Competition; Location; Transport operator; Depot transp ; Impact study; Railway; Line transp ; 02 Road: Economics; 02 Road: Economics; 111 Road: Public transport; 111 Road: Public transport; J13 Railway: Economics; J13 Railway: Economics; Transportvetenskap;

    Sammanfattning : The results of this work show that the cost efficiency of tendered bus services is similar across all Swedish counties, except for the more high-density counties where efficiency is lower. Considerably lower efficiency is also found for contracts with services run in-house by the Public Transport Authority (PTA), compared to when the same service is run by a private actor. LÄS MER

  4. 8. Effects of hearing loss on traffic safety and mobility

    Författare :Birgitta Thorslund; Björn Lyxell; Björn Peters; Björn Lidestam; Håkan Alm; Statens väg- och transportforskningsinstitut; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hearing; Driver; Driving veh ; Behaviour; Cognition; Mental load; Eye movement; Tactile; Warning; Signal; Driver assistance system; Navigation route ; Simulator driving ; Test; Safety; 841 Road: Road user behaviour; 841 Road: Road user behaviour;

    Sammanfattning : The aim of this PhD thesis was to investigate traffic safety and mobility for individuals with hearing loss (HL). Three studies were conducted: 1. a questionnaire survey aimed to evaluate differences in choice of transportation that might be related to HL, 2. LÄS MER

  5. 9. Occurrence of Traffic-Derived Microplastics in Different Matrices in the Road Environment

    Författare :Ida Järlskog; Yvonne Andersson-Sköld; Stephan Wagner; Statens väg- och transportforskningsinstitut; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; non-exhaust particles; tire wear particles; road dust; automated SEM EDX; environmental samples; optimized sample preparation; organic pollutants; street sweeping; traffic-derived microplastics; road simulator;

    Sammanfattning : The prevalence of microplastic contamination has raised concerns about the potential risk and impact on the global environment. Traffic-derived microplastics, i.e., tire wear particles (TWP), polymer-modified bitumen, and road markings contribute to the emissions, and TWP are assumed to be one of the largest sources of microplastic emissions. LÄS MER

  7. 10. Sustainable Electromobility : A System Approach to Transformation of Transportation

    Författare :Harrison John Bhatti; Mike Danilovic; Rune Wigblad; Statens väg- och transportforskningsinstitut; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Energy system; Transportation System; System Approach; Symbiotic Business Model; Innovation Ecosystem; Technology Readiness; Political Readiness; Societal Readiness; Economic Readiness;

    Sammanfattning : This thesis aims to explore, analyze, and develop knowledge that leads to an understanding of identifying the key actors and their symbiotic relationships and dependencies in transforming the energy and transportation system from fossil-based to renewable and fossil fuel-powered vehicles to electric. The research was explorative and categorized into two studies. LÄS MER