Sökning: "traffic"

Visar resultat 1 - 5 av 1488 avhandlingar innehållade ordet traffic.

  1. 1. Road traffic metals : sources and emissions

    Författare :David Hjortenkrans; Bo Bergbäck; Per-Arne Malmqvist; Högskolan i Kalmar; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Emission patterns; Heavy metals; Roadside soil; Sweden; Traffic; Sequential extractions; SFA; Environmental chemistry; Miljökemi; Environmental Chemistry; Miljökemi;

    Sammanfattning : As the environmental regulations and technical progress have forced the factories’ old “end of pipe” solutions to improve, the metal emissions from point sources have decreased. Instead, the diffuse consumption emissions from goods in use now are in focus. LÄS MER

  2. 2. Traffic Simulation Modelling of Rural Roads and Driver Assistance Systems

    Författare :Andreas Tapani; Jan Lundgren; Haris N. Koutsopoulos; Linköpings universitet; []
    Nyckelord :Traffic; Micro; Simulation; Model; Car following; Rural road; Driver; Fatigue; Rumble strip; Adaptive cruise control; Active safety system; Safety; Evaluation; Overtaking; Traffic lane; Mathematical model; Thesis; Road: Traffic theory; Road: Traffic theory; TECHNOLOGY;

    Sammanfattning : Microscopic traffic simulation has proven to be a useful tool for analysis of varioustraffic systems. This thesis consider microscopic traffic simulation of rural roads andthe use of traffic simulation for evaluation of driver assistance systems. LÄS MER

  3. 3. Trafikslag på undantag : Cykeltrafiken i Stockholm 1930-1980

    Författare :Martin Emanuel; Arne Kaijser; Mikael Hård; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; bicycle traffic; bicycle planning; city traffic regime; Copenhagen; Denmark; history; history of technology; ideology; materialised interpretation; representation; Stockholm; Sweden; traffic engineering; traffic planning; traffic policy; 20th century; urban history; urban planning; 1900-talet; cykeltrafik; cykelplanering; Danmark; ideologi; Köpenhamn; materialiserad tolkning; representation; stadshistoria; stadsplanering; stadstrafikregim; Stockholm; Sverige; teknikhistoria; trafikteknik; trafikplanering; trafikpolitik;

    Sammanfattning : The modal share of bicycle traffic in Stockholm increased from 20 per cent to over 30 per cent during the 1930s, and reached staggering levels during World War Two – peaking at over 70 per cent. Soon after the war, however, the share declined rapidly. LÄS MER

  4. 4. Traffic Emissions of Aerosols

    Författare :Matthias Vogt; Douglas Nilsson; Eiko Nemitz; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Primary Aerosol Emissions; Carbon Dioxide Emissions; Traffic Aerosol; Urban Aerosol; Traffic Activity; Emission Factors; Eddy Covariance; Aerosol Flux; Atmosphere and hydrosphere sciences; Atmosfärs- och hydrosfärsvetenskap; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Non-exhaust traffic emissions are unregulated, yet the mass emission of non-exhaust particles may be larger than exhaust emissions. In addition, their emission factors (EF) are more uncertain than exhaust emissions. This thesis presents aerosol flux measurements in Stockholm using the eddy covariance method. LÄS MER

  5. 5. Advancing Traffic Safety : An evaluation of speed limits, vehicle-bicycle interactions, and I2V systems

    Författare :Ary Pezo Silvano; Haris Koutsopoulos; Haneen Farah; Karl-Lennart Bång; Alfonso Montella; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Traffic safety; urban roads; posted speed limits; road characteristics; free-flow speed; time headway; vehicle-bicycle interactions; logit model; yielding probability; cooperative systems and warning messages.; Transportvetenskap; Transport Science;

    Sammanfattning : Since the introduction of motor vehicles, the number of fatalities and accidents has been a concern for society.The number of fatalities on roads is amongst the most common causes of mortality worldwide (WHO, 2015).Even in industrialized countries the number of fatalities remains unacceptable. LÄS MER