The basic concept of the break-away sign support is to provide a structure that will resist wind loads yet fail, at preselected locations, when struck by a vehicle. With three properly designed connections at critical locations the support will be stable and will possess the break-away characteristics when struck by a vehicle. The major objective of the research was to provide information for the design of safe break-away cantilever supports. Emphasis was placed on developing design recommendations for the three critical connections. The information was developed through laboratory tests and the use of a mathematical model and confirmed through full-scale crash tests and indications of in-service performance from accident records. Alternative types of roadside sign supports were subjected to full-scale crash tests to determine performance characteristics. (BPR abstract)


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    Titel :

    Highway Sign Support Structures. Volume 1. Break-Away Roadside Sign Support Structures


    Erscheinungsdatum :

    1967


    Format / Umfang :

    362 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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    Johns, K.W. / Dexter, R.J. | Tema Archiv | 1999


    Design criteria for break-away sign supports

    Edwards, T.C. / Hirsch, T.J. / Olson, R.M. | Engineering Index Backfile | 1968


    Safety Provisions for Support Structures on Overhead Sign Bridges. Volume VI

    R. M. Olson / D. L. Ivey / J. E. Martinez et al. | NTIS | 1971


    Roadside Sign Controller and Dynamic Message Sign System

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