Wireless magnetometers have been considered as a practical alternative to inductive loops and suitable for large intersections, where span wire is generally used for traffic signal support. In this paper, wireless magnetometers are evaluated for stop bar vehicle detection at signalized intersections. High-resolution detector data were collected in the field subjected to various weather and environmental conditions. Conditional inference trees were used to correlate detection errors with weather and environmental factors that potentially affect the performance of wireless magnetometers. The study results indicated that the wireless magnetometers are fairly robust to various environmental conditions, such as wind, lighting, and visibility. Frequent passing of heavy vehicles, common at large intersections, can cause communication interruption between in-pavement sensors and the access point. This likely increases false and stuck-on call errors, which could be aggravated by adverse weather (e.g., rain, fog, or snow). This communication interruption issue can be mitigated by proper installation of additional repeaters. Provided the interruption issues are site-specific, professional judgment and field test are required for proper system setup, which is critical to delivering accurate and reliable detection for the wireless magnetometer system.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Performance of Wireless Magnetometers for Stop Bar Detection at Signalized Intersections


    Weitere Titelangaben:

    Transportation Research Record


    Beteiligte:
    Yang, Jidong J. (Autor:in) / Zuo, Bashan (Autor:in)


    Erscheinungsdatum :

    2018-08-08




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Evaluation of Wireless Magnetometers for Vehicle Detection at Signalized Intersections

    Medina, Juan C. / Hajbabaie, Ali / Benekohal, Rahim F. | ASCE | 2011





    Estimating Pedestrian Volumes for Signalized and Stop-Controlled Intersections

    Le, Minh / Geedipally, Srinivas R. / Fitzpatrick, Kay et al. | Transportation Research Record | 2020