The basic objective of this study has been to address the issue of how adequate point-mass representations are in predicting friction requirements for actual vehicles operating along superelevated curves. The project focused on this and related questions by combining computer analysis and full-scale vehicle testing. An existing comprehensive computer model used for predicting transient or nonsteady maneuvering situations was also employed to analyze friction demand while maneuvering along superelevated curves. Highway tests were then performed for two passenger cars and a five-axle tractor-semitrailer to collect representative test data and assist in validing the predictions of the computer models. Finally, a sensitivity analysis was performed to illustrate the relative importance and interactions of various vehicle parameters and highway geometrics in influencing side friction requirements.


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    Title :

    Side Friction for Superelevation on Horizontal Curves. Volume 2. Final Technical Report


    Contributors:
    C. C. MacAdam (author) / P. S. Fancher (author) / L. Segel (author)

    Publication date :

    1985


    Size :

    236 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    Side Friction for Superelevation on Horizontal Curves. Volume 3. Appendices A-G

    C. C. MacAdam / P. S. Fancher / L. Segel | NTIS | 1985


    Superelevation of horizontal curves

    Rawlings, F.G.R. | Engineering Index Backfile | 1950


    Superelevation, Side Friction, and Roadway Consistency

    Nicholson, Alan | Online Contents | 1998


    Transition curves and superelevation

    Royal-Dawson, F.G. | Engineering Index Backfile | 1928