Improving the efficiency of urban traffic operations along arterials is a priority for many agencies because congestion affects the movement of people and goods in many cities. Advanced traffic management systems are being implemented to optimize traffic signal timing in congested corridors. Pedestrians and transit users are even more exposed to vehicle emissions than are drivers. However, pedestrian exposure to traffic emissions is typically not a consideration when traffic signal timing decisions are made. The relationship between exposure to air pollution and traffic signal timing has not yet been fully explored or modeled. This paper quantifies the factors that contribute to concentrations of sidewalk-level particulate matter (1.0 to 2.5 μm in diameter) at a busy intersection along an urban arterial in Portland, Oregon. The study is the first research effort to combine real-world, detailed traffic signal timing data (at 5-s intervals) and air pollutant concentration data. Several types of variables are included in the statistical analysis: traffic signal timing variables, weather-related variables, traffic volume and composition variables, and variables associated with bus presence and characteristics. Statistical results show the importance of signal timing variables, traffic volumes, and queuing.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Impact of Traffic Signal Timing on Sidewalk-Level Particulate Matter Concentrations


    Weitere Titelangaben:

    Transportation Research Record: Journal of the Transportation Research Board


    Beteiligte:


    Erscheinungsdatum :

    01.01.2013




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Sidewalk passing warning device without traffic control

    LIU WENBING / CHEN YIFEI | Europäisches Patentamt | 2024

    Freier Zugriff

    Smart city sidewalk traffic light voice prompt mechanism

    FENG LIN / CHEN QIULING / ZHOU YUAN et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    SIDEWALK EDGE DETECTION DEVICE, SIDEWALK EDGE DETECTION METHOD, AND SIDEWALK EDGE DETECTION PROGRAM

    YOSHIDA TAIGA / YAO YASUHIRO / ITO NAOKI et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    Intelligent street lamp pole for realizing linkage of sidewalk and traffic signal lamp

    YU XUEFENG | Europäisches Patentamt | 2025

    Freier Zugriff

    Sidewalk traffic conditions and obstacles shown by study

    Moore, C.S. | Engineering Index Backfile | 1929