The objective of the study has been to develop relationships between pavement roughness and weight-in-motion (WIM) system measurement error for individual axles, tandem axles, gross weight and axle spacing. The dynamic weight measured by a WIM scale is determined by the dynamic response of the vehicle system to the pavement roughness. A dynamic simulation model was formulated and used to study the important parameters which affect tire/pavement dynamic force. A series of tests were conducted at three inservice WIM sites in Nevada to determine the relationship between WIM measurement error and vehicle factors including: (1) cab type; (2) trailer type; (3) configuration; (4) suspension system type; (5) speed; and (6) roughness. A second series of tests were conducted using two vehicles and instrumented to measure dynamic tire/pavement force. An empirical relationship has been developed to predict axle and gross weight weighing error as a function of pavement roughness. A procedure is outlined to calculate pavement smoothness requirements for WIM installations to achieve specified accuracy levels. An example is included.


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    Titel :

    Calibration of Weigh-in-Motion Systems. Volume 1. Summary and Recommendations


    Beteiligte:
    J. M. Zuieback (Autor:in) / G. D. Wonacott (Autor:in) / J. D. Bailey (Autor:in)

    Erscheinungsdatum :

    1988


    Format / Umfang :

    58 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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