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  • 1.
    Anund, Anna
    et al.
    Statens väg- och transportforskningsinstitut, Samspel människa, fordon, transportsystem, MFT.
    Forsberg, Inger
    Statens väg- och transportforskningsinstitut, Mobilitet, aktörer och planering, MAP.
    Ihlström, Jonas
    Statens väg- och transportforskningsinstitut, Samspel människa, fordon, transportsystem, MFT.
    Nykterhetsstödjande system: diskussioner i fokusgrupper2014Report (Other academic)
    Abstract [en]

    There is a common understanding that driving under the influence of alcohol is associated with higher risk of being involved in crashes with injuries and possible fatalities as outcome. The aim with this study was to understand drivers’ vision of a future vehicle integrated system for alcohol detection. Eight focus groups with in total 47 participants representing different stakeholders were recruited and conducted for the purpose. The groups represented young drivers (18–19 years old), males (30–60 years old), females (30–60 years old), elderly (70–90 years old), former alcohol addicts, one group represented authorities and finally one represented retailors and rental car companies. The analysis was based solely on the transcriptions and the analysis was performed using inductive content analysis. The results show a clear view that such future vehicle integrated system will benefit a large group of drivers. They said that the system would probably mainly prevent driving by people who unintentionally and unknowingly drive under the influence of alcohol. The groups did, however, not regard the system as a final solution for the drunk driving problem, and believed that certain groups, such as criminals and alcoholics, would most likely find a way around the system. From the drivers point of view the system most truly should be invisible for the drivers. Feedback to the driver was seen as justified at levels below the legal limit, but not for levels above the limit: for those, the system should simply prevent the car from starting. Feedback should be given through sound or as a visual feedback. Reliability and trust to the system was rated as very important, and it was underlined that it was important that it was the drivers BAC that was detected not the passengers.

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  • 2.
    Aretun, Åsa
    et al.
    Statens väg- och transportforskningsinstitut, Mobilitet, aktörer och planering, MAP.
    Berg, Jessica
    Statens väg- och transportforskningsinstitut, Mobilitet, aktörer och planering, MAP.
    Henriksson, Malin
    Statens väg- och transportforskningsinstitut, Mobilitet, aktörer och planering, MAP.
    Henriksson, Per
    Statens väg- och transportforskningsinstitut, Mobilitet, aktörer och planering, MAP.
    Ihlström, Jonas
    Statens väg- och transportforskningsinstitut, Trafikanttillstånd, TIL.
    Janhäll, Sara
    RISE.
    Eric, Sjögren
    Cykelpoolen i Sverige AB.
    Silvander, Therese
    Energikontor Norra Småland.
    GoMate – Diversifierad elfordonspool för den förtätade staden: slutrapport2019Report (Other academic)
    Abstract [en]

    In the GoMate project, EV sharing services has been tested in two residential areas located in the central city of Jönköping; services consisting of e-bikes, e-cargo bikes and e-cars. The aim of the project has been to investigate whether and to what extent EV sharing services can contribute to reduced car use in favor of the use of more sustainable mobility solutions. The results show that a diversified EV club has the potential to reduce car use. It is mainly the e-bike that replaces car trips for everyday travel, which in the long term can reduce car holdings in favor of the use of e-car services for occasional travel.

    However, if the potential is to be realized, price and business models are required for these services that stimulate reduced car use, considered as a process that can be expected to occur gradually over time. Such a process also needs to be supported by policy instruments and measures that limit car use in central city areas.

    If the potential is to be realized, the services also need to be scaled up considerably with respect to the number of vehicles per apartment. Although there was a relatively large EV club with a total of 17 (of which 15 were bicycles) vehicles for 160 households, which were tested in the project, it only had the capacity to supply a very small proportion of the residents' total travel, and with very little effects regarding reduction in energy use and carbon emissions.

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  • 3.
    Ceci, Ruggero
    et al.
    Swedish Transport Administration.
    Ihlström, Jonas
    Statens väg- och transportforskningsinstitut, Samspel människa, fordon, transportsystem, MFT.
    Elektroluminiscent ljus: förstudie avseende tillämpningar för ökad synbarhet hos vägutrustningen2014Report (Other academic)
    Abstract [en]

    This report deals with the subject of electroluminescent light (EL-light) with regard to its potential application within the road traffic area. A specific focus lies within the visibility of the roadside equipment and the possibility to reinforce the visibility for vulnerable road users. EL-technology has been known since the beginning of the last century but was introduced as a commercial product sometimes in the 1980s. Within the present project a workshop has been carried out at VTI, with representatives from both road authorities and research, with the purpose to analyze EL-light and its application in different areas of road traffic. The results from this workshop constitute the main results of this study. In addition to this some minor tests have been carried out in order to demonstrate how the EL-light equipment functions in different environments. The main results from the workshop points out a number of possible applications for EL-technology in the road traffic area. These different applications were categorized into the following five main areas: 1. Attention, warning (e.g., lighting of pedestrian and bicycle lanes). 2. Marking, warning (e.g. rail platforms, harbor areas, bridges etc). 3. Evacuation, leadlight (e.g., tunnels, underground station facilities). 4. Vehicle lighting (e.g., bicycles, motorbikes, other two wheelers). 5. Road, traffic esthetics (e.g., roundabouts, bridges, tunnels etc.). The results from the demonstrations carried out within the project indicates a positive trend for the use of EL-light in the roadside environment, especially for the darkness tests where EL-panels reinforced the visibility of the objects in the road environment. The blinking light function seemed to give the best visibility in this particular test.

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  • 4.
    Ihlström, Jonas
    Statens väg- och transportforskningsinstitut, Samspel människa, fordon, transportsystem, MFT.
    Vägbanereflektorer: trafikantbeteende, upplevelse och bidrag2014Report (Other academic)
    Abstract [en]

    The overall aim of this study was to increase the knowledge about road studs’ potential impact on road user behavior, how they are perceived and the possible contribution they make to other road equipment. The study consisted of three parts. Part one was a literature study, part two was a field study with speed measurements in a sharp rural road curve equipped with road studs either on the center or the right edge line, and part three was an interview study. The results from the literature review showed that there were relatively few studies on road studs and road user behavior. The general conclusion was that the use of road studs seems to increase speeds slightly, while the lateral position will be shifted slightly in the direction from the markings. The results from the speed measurements in a sharp curve equipped with active illuminated road studs showed no significant differences in speed in any of the conditions. The results from the interview study showed that the first contact with the studs was perceived that something had been done in order to attract attention on something, which created curiosity, but also uncertainty about what to expect and how to act ahead. An impression of a slight help to determine the road's stretching before entering the curve was expressed, but at the same time, some competition from delineator posts of the visual space was experienced which created a sense of visual overload. It was thought that non-familiar drivers, probably would reduce the speed slightly ahead of the curve when they noticed the road studs. Familiar drivers were regarded not to be affected in this sense. Regarding what unique contribution the use of road studs could give, it was expressed that they could help road users by warning that a sharp curve that required special adaptation approached. However, the overall perception was that road studs most likely would not contribute much in improving the visual guidance through curves. Instead, it was considered that road markings and delineator posts would usually be sufficient.

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    FULLTEXT01
1 - 4 of 4
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