The goals of this research were to reevaluate current procedures, especially how speed is used as a control in existing policy and guidelines and then develop recommended changes to the design process. This report examines the relationship between design speed and operating speed through a survey of the practice and a thorough analysis of geometric, traffic and speed conditions. The basis for recent changes in speed definitions in AASHTO's A Policy on Geometric Design Devices (MUTCD) are presented. The included CDROM contains the field data that should be combined with future data collection efforts to gain a better understanding of the factors that influence operating speed in urban and suburban areas. Researchers should find the data available on the accompanying CDROM to be very useful in further exploring relationships between roadway factors and operating speed. The report will be of interest to designers and others interested in understanding the factors that affect drivers' speeds.


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    Titel :

    Design Speed, Operating Speed, and Posted Speed Practices (on CD-ROM)


    Erscheinungsdatum :

    2003


    Format / Umfang :

    pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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