| 1. |
- Hrelja, Robert, 1974-, et al.
(författare)
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Dömd till samverkan! : En kunskapsöversikt
- 2016
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Skapandet av en effektiv kollektivtrafik kräver i ökande grad samverkan mellan formellt självständiga organisationer. I denna kunskapsöversikt diskuteras samverkan mellan offentliga och privata organisationer samt resenärer. Syftet är att öka den begreppsmässiga förståelsen av samverkan på kollektivtrafikområdet. Den gör det genom att definiera samverkan, och diskutera vilka kvaliteter som möjliggör väl fungerande samverkan. Kunskapsöversikten börjar med att beskriva tidigare kollektivtrafikforskning om samverkan. Därefter beskrivs vilka slutsatser som finns om samverkan i andra för kollektivtrafiken analytiskt intressanta forskningsfält. En slutsats är att samverkan kan definieras som försök att överkomma problem med kollektivt handlade, och försök att förändra en situation där ömsesidigt beroende aktörer agerar självständigt, till en situation där de agerar samfällt för att uppnå gemensamma mål. Samverkan ska enligt denna definition förstås som en mer sofistikerad form av kollektivt handlande än vad som menas med begrepp som samordning eller koordination. Väl fungerande samverkan kan beskrivas som en form av ”samhandling”. Motsatsen kan beskrivas vara ”förhandling”. I samhandling utforskar formellt självständiga organisationer gemensamma nyttor, och uppnår mer än om de hade agerat självständigt. Samhandling kan ses som ett stegvist tillitsbygge som förutsätter kvaliteter som ett ömsesidigt förtroende, förståelse av andra organisationers drivkrafter, gemensam problemformulering. Den måste även vara tydligt handlingsinriktad.
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| 2. |
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| 3. |
- Abbas, Khaled A
(författare)
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Environmentally sustainable transport strategies : the way forward in metropolitan cities
- 2001
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Ingår i: Proceedings of the conference Traffic Safety on Three Continents. - Linköping : Statens väg- och transportforskningsinstitut. ; , s. 780-791
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This paper is concerned with one of the three requirements of a sustainable transport system, namely the environmental dimension. It starts by presenting components and interactions of the transport and traffic systems using causal diagrams. Generic traffic problems are identified and their causes categorized. A classification of demand and supply-based policies and measures that can be used in designing environmentally sustainable transport strategies is depicted. Such strategies are targeted towards minimizing the generic traffic problems encountered in metropolitan cities, i.e., traffic congestion, accidents, environmental degradation and energy inefficiencies. In this paper, Travel Demand and Land Use Management are considered as two of the basic pillars for designing environmentally sustainable transport strategies. Criteria for comparing demand versus supply-based policies are suggested. These are applied to assess the benefits and limitations of each policy, hence assisting decision makers in the prioritization and choice of such policies.
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| 4. |
- Ahlström, Christer, et al.
(författare)
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Performance of a one-camera and a three-camera system
- 2010
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Driving and operating a vehicle is to a great extent a visual task. In driver behaviour studies it is therefore important to be able to measure where the driver is looking. Today this can be done unobtrusively and remotely in real-time with camera based eye tracking. The most common remote eye tracking systems use multiple cameras in order to give satisfactory results. However, promising results using only one camera has recently emerged on the market. The main objective of this study is to compare eye tracking systems with one and three cameras, respectively, during various measurement conditions.A total of 53 participants were enrolled in the study. Data from the two eye trackers were acquired and analysed in terms of availability, accuracy and precision. The results indicate that both availability and accuracy are affected by many different factors. The most important factors are the number of cameras that is used and the angular distance from straight ahead. In the central region (straight ahead) both one-camera and three-camera systems have a high degree of accuracy and availability, but with increasing distance from the central region, the results deteriorate. This effect falls harder upon the one-camera system. Interestingly, there were no significant effects when wearing glasses in either availability or accuracy. There was however an interaction effect between distance and glasses.Advantages with a one-camera system are that it is cheaper, easier to operate and easier to install in a vehicle. A multi-camera system will, on the other hand, provide higher availability and accuracy for areas that are far from the road centre. A one-camera system is thus mostly suitable for in-vehicle applications such as systems that warn drivers for sleepiness or distraction while multi-camera solutions are preferable for research purposes.
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| 5. |
- Ahmed, Ishtiaque, et al.
(författare)
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Urban Road Accidents in Dhaka, Bangladesh
- 2013
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Ingår i: Proceedings of the 16th International Conference Road Safety on Four Continents. - Linköping : Statens väg- och transportforskningsinstitut.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Dhaka, the capital city of Bangladesh, is the most vulnerable city both in terms of total number of accidents and accident rates. A total number of 2,720 accidents occurred during 2007-2011. This has caused a total of 1,481 numbers of pedestrian fatal accidents with 1,562 pedestrian fatal casualties. The primary objective of the paper is to study the characteristics of the road traffic accidents in Dhaka. The study area for this study is Dhaka Metropolitan Area. The paper focused on a few selected parameters a) Trend in overall accident rates b) Monthly variation of accident rates c) Accidents by severity levels d) Collision types e) Accidents in different lighting conditions. The raw data in the form of Accident Report Forms (ARFs) were collected from Dhaka Metropolitan Police (DMP). A GIS database was prepared for accidents showing locations and details for the period of 2007-2011. The analysis showed that on an average, the total number of traffic accidents is reduced by 11% each year. No profound effect of weather/season on road accidents is found. Fatal accidents and motor collisions are decreasing while injury accidents are increasing. Most traffic accidents: cause fatality (69%) and hit a pedestrian (60%). Fifty four percept of the accidents occurred during daytime. The paper recommends improvement measures for the road accident data collection and management system in Dhaka, Bangladesh. That includes the training need for the police staff, need for a geo-referenced database for data storage and management and involvement of multiple agencies in the process. This paper also recommends further studies on the extent and characteristics of underreporting of accidents.
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| 6. |
- Antonson, Hans, et al.
(författare)
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Turistvägar och näringsutveckling : trafikantupplevelser och planeringskriterier
- 2007
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Rapport (populärvet., debatt m.m.)abstract
- VTI and the Norwegian Institute of Transport Economics (TØI) have at the request of the Swedish Road Administration carried out a research and development project concerning tourist routes in Sweden. The project was done in two parts, one literature study with examples of how other countries work with tourist routes and one field study about the opinions of visitors and business operators along two Swedish tourist routes (the present publication). The two tourist routes which have been studied are Tourist Route Gränna-Ödeshög-Rök in the Counties of Jönköping and Östergötland, and Tourist Route Kullaberg in the County of Skåne. The study of the experiences of the business operators, the visitors' willingness to pay and a deepened analysis of the landscape was only done along the Gränna route. As for the experiences of the visitors the data for the two Swedish tourist routes have been compared with similar data from a Norwegian tourist route, Tourist Route Sognefjell.
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| 7. |
- Anund, Anna, et al.
(författare)
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The effects of driving situation on sleepiness indicators after sleep loss : A driving simulator study
- 2009
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Ingår i: Industrial Health. - : National Institute of Industrial Health. - 0019-8366 .- 1880-8026. ; 47:4, s. 393-401
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Tidskriftsartikel (refereegranskat)abstract
- Almost all studies of sleepy driving are carried out in driving simulators and with monotonous road conditions (no interaction with other cars). The present study investigated indicators of sleepy driving in a more challenging scenario after a night awake. 17 participants drove a high fidelity moving base driving simulator experiment while sleepiness was monitored physiologically and behaviourally. Short periods of situations of free driving (no other vehicles) alternated with short periods of following another vehicle (car following) with and without the possibility to overtake. The result showed that a night of prior sleep loss increased sleepiness levels at the wheel (eye closure duration and lateral variability) compared to after a night of normal sleep. Blink duration while overtaking was significantly lower compared to the other situations, it was at the same level as after night sleep. Speed when passing a stopped school bus was not significantly affected by sleepiness. However the warning caused a more rapid reduction of speed. In conclusion, a moderately challenging driving contest did not affect sleepiness indicators, but a very challenging one did so (overtaking). This suggests that it is important to monitor the driving situation in field operational tests of sleepy driving.
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| 8. |
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| 9. |
- Assum, Terje, et al.
(författare)
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Accidents Risk and Road Safety Among Immigrants in Norway
- 2013
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Ingår i: Proceedings of the 16th International Conference Road Safety on Four Continents. - Linköping : Statens väg- och transportforskningsinstitut.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Immigrants make up 13.1 % of the population of Norway in 2012. Immigrant drivers in Norway have considerably higher accident risk, measured as personal-injury accidents per 1000 license holders, than drivers born in Norway. Drivers from the Middle East and Africa have more than twice the accidents risk of drivers born in Norway or immigrant drivers from the western world. Accident risk is calculated using the national registers of road accidents, driver’s licenses and the Norwegian population. Factors which may explain these differences in accident risk were studied by focus group interviews and a questionnaire survey. Language problems, worries about family in the country of origin, attitudes to road traffic rules and driving behavior reflected in the number of road traffic violation fines may contribute to explaining the differences in road accident risk.
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| 10. |
- Berg, Jessica, 1975-, et al.
(författare)
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Bilisters användande av parkeringsanläggningar i centrala Göteborg : Orsaker, behov och konsekvenser för olika grupper
- 2018
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Allt fler kommuner arbetar för att minska antalet parkeringsplatser i centrala delar. I Göteborg kommer ca 5 000 parkeringsplatser att försvinna under de kommande åren. Syftet med föreliggande studie är att undersöka orsaker till att människor utnyttjar parkeringsanläggningar i centrala Göteborg. Studien baseras på intervjuer med totalt 71 parkerare vid tre parkeringsanläggningar i centrala Göteborg. Som analysverktyg har idealtyper använts för att lyfta fram kärnan i intervjumaterialet och skapa ett sammanhang. Nio idealtyper identifierades i materialet vilka beskriver varför människor använder bilen och parkeringsanläggningar i centrala Göteborg, såsom brist på alternativ till bilen, stressig vardag, säsongsbunden användning, bilen som en rättighet, för att överbrygga långa avstånd, pragmatik, och för att turista. Resultatet visar att incitament att köra bil och möjligheten att välja transportmedel påverkas såväl av vardagens strukturer som attityder och erfarenheter kopplat till olika transportmedel och transportsystem. Slutsatserna är att ju mer komplext vardagsliv människor har, desto mer kommer arbetsliv och privatliv att påverkas av parkeringsåtgärder. Kollektivtrafiken upplevs som bristfällig och tidskrävande men många ser också kollektivtrafik som ett fullgott alternativ till bilen.
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