Sökning: "appropriate speeds"

Visar resultat 1 - 5 av 23 avhandlingar innehållade orden appropriate speeds.

  1. 1. Dynamic speed adaptation based on information technology - a theoretical background

    Författare :Andras Varhelyi; Trafik och väg; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknik; Technological sciences; driver acceptance; appropriate speeds; speed behaviour; critical conditions; Social sciences; Samhällsvetenskaper;

    Sammanfattning : Knowledge on the factors influencing driver speed-behaviour, the relationship between speed and traffic safety and means to influence speed behaviour is systematised. Expert judgements and the high proportion of injury accidents show that improved speed adaptation has the largest safety potential in the following situations: - Road surface-, visibility and weather affected situations (e. LÄS MER

  3. 2. Speed Choice : The Driver, the Road and Speed Limits

    Författare :Mats Haglund; Nils Petter Gregersen; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Psychology; Driving behaviour; Speed choice; Risk estimates; Enforcement; Attitudes; Psykologi; Psychology; Psykologi; Psychology; psykologi;

    Sammanfattning : Speed choice is one of the more characteristic features of driver behaviour. The speed a driver chooses to travel at determines the degree of difficulty he or she operates under. Higher speeds lead to more accidents, higher accident risk and more severe consequences of an accident. LÄS MER

  4. 3. A data driven approach for automating vehicle activated signs

    Författare :Diala Jomaa; Mark Dougherty; Siril Yella; Högskolan Dalarna; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optimal trigger speed; vehicle activated sign; mean speed; standard deviation; calibration; driver behaviour; data driven approach; automatic model; Complex Systems – Microdata Analysis; Komplexa system - mikrodataanalys;

    Sammanfattning : Vehicle activated signs (VAS) display a warning message when drivers exceed a particular threshold. VAS are often installed on local roads to display a warning message depending on the speed of the approaching vehicles. VAS are usually powered by electricity; however, battery and solar powered VAS are also commonplace. LÄS MER

  5. 4. Multiple circuits controlling the versatility of locomotion : molecular and connectivity principles in zebrafish

    Författare :Irene Pallucchi; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Locomotion is produced by neuronal circuits in the spinal cord. These motor circuits rely on the activation of supraspinal centres and transform descending excitatory drive into coordinated rhythmic activity. LÄS MER

  7. 5. Two Essays in Empirical Finance: Unit-Root Testing in the Presence of Structural Breaks

    Författare :Florin G. Maican; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : Essay 1: Real Exchange Rate Adjustment in European Transition Countries Essay 1 presents unit-root test results for real exchange rates in ten Central and Eastern European transition countries relative to the Euro during 1993:01-2005:12. Because of the shift from controlled to market economies and the accompanying crises, failed policy regimes and changes in exchange rate regimes, appropriate tests in transition countries require allowing for both structural changes and outliers. LÄS MER