Lightweight “drag sleds” have long been used by crash investigators to determine the “drag factor” at a crash scene. Despite this long history, no published work has ever shown a correlation between drag sled results and the skidding performance of vehicles on multiple “uncalibrated” surfaces. Indeed, some researchers have noted that their testing appeared to show a poor correlation between the two. It has become clear in recent years that the interaction between braking or skidding tires and pavement does not fit the simple weight- and speed-independent friction model that has been assumed, leaving the accuracy of drag sleds in doubt. This paper presents the results of several comparison tests at different locations, involving multiple skid-test vehicles, dozens of drag sleds of various designs, and more than a hundred “pullers,” and attempts to correlate the results of the two methods. Drag sleds tended to read higher than even the peak value generated with skidding cars, though occasionally this was not the case, and no relationship between individual drag sled results and skidding vehicle results could be identified which applied across multiple surfaces.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Comparison of Drag-Sled and Skidding-Vehicle Drag Factors on Dry Roadways


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Baxter, Albert (Autor:in) / Schmidt, Bruno (Autor:in) / Livesay, Ed (Autor:in) / Stanard, Terry (Autor:in) / Bartlett, Wade (Autor:in) / Wright, William (Autor:in)

    Kongress:

    SAE 2006 World Congress & Exhibition ; 2006



    Erscheinungsdatum :

    2006-04-03




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Comparison of drag-sled and skidding-vehicle drag factors on dry roadways

    Bartlett,W. / Baxter,A. / Livesay,E. et al. | Kraftfahrwesen | 2006


    2006-01-1398 Comparison of Drag-Sled and Skidding-Vehicle Drag Factors on Dry Roadways

    Bartlett, W. / Baxter, A. / Livesay, E. et al. | British Library Conference Proceedings | 2006


    Vehicle drag reduction structure, drag reduction method and vehicle

    LI SHIQING / XIA MEIHUA / CAI SHUXUAN et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    Vehicle Integration Factors Affecting Brake Caliper Drag

    Antanaitis, David B. | SAE Technical Papers | 2012


    Vehicle drag reduction

    BENJAMIN POTTS-JOHNSON | Europäisches Patentamt | 2023

    Freier Zugriff