How fast you think you can drive safely sometimes differs from what is posted on the speed limit sign. Also, individual drivers often disagree about how fast is 'too fast.' Questions such as 'Should I slow down to 30 mph for that curve' and 'Why should I have to limit my speed on a four-lane straight and flat roadway with no traffic' are frequently asked. These are questions and concerns that transportation engineers must consider and often explain as they design and operate our roadways. Research and experience reveal new ways of improving safety and efficiency, and also teach what works best. It's important for engineers and policy makers to have access to the most technically accurate and current information, so they can accurately explain how roadways are designed and operated, as well as ensure that official documents continue to evolve and improve. This document was prepared to aid transportation engineers in explaining speed-related concepts. It compiles and reviews the current definitions of key speed-related terms. It also discusses appropriate relationships and practice pertaining to these key speed measures.


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    Title :

    Speed: Understanding Design, Operating, and Posted Speed


    Contributors:

    Publication date :

    1996


    Size :

    20 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Design Speed, Operating Speed, and Posted Speed Survey

    Fitzpatrick, Kay / Shamburger, Brian / Fambro, Dan | Transportation Research Record | 1996


    Design Speed, Operating Speed, and Posted Speed Survey

    Fitzpatrick, Kay / Shamburger, Brian / Fambro, Dan | Transportation Research Record | 1996


    Design Speed, Operating Speed, and Posted Speed Survey

    Fitzpatrick, Kay | Online Contents | 1996


    Design Speed, Operating Speed and Posted Speed Relationships

    Fitzpatrick, Kay | Online Contents | 1997


    Compatibility of Design Speed, Operating Speed, and Posted Speed

    K. Fitzpatrick / J. D. Blaschke / C. B. Shamburger et al. | NTIS | 1995