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    [科技报告]   Pochowski, A.   Paul, A.   Rodegrdts, L. A.        共92页
    摘要 : National Cooperative Highway Research Program (NCHRP) Synthesis 488: Roundabout Practices summarizes roundabout policies, guidance, and practices within state Departments of Transportation (DOTs) as of 2015. The synthesis may be u... 展开

    [科技报告]   Pigman, J. G.        共41页
    摘要 : Highway administrators, engineers, and researchers often face problems for which information already exists, either in documented form or as undocumented experience and practice. This information may be fragmented, scattered, and ... 展开

    [科技报告]      共254页
    摘要 : This annual report presents a summary of progress on investigations conducted as part of the Innovations Deserving Exploratory Analysis (Highway IDEA) program for the National Cooperative Highway Research Program (NCHRP). The NCHR... 展开

    [科技报告]      共237页
    摘要 : This annual report presents a summary of progress on investigations conducted as part of the Innovations Deserving Exploratory Analysis (Highway IDEA) program for the National Cooperative Highway Research Program (NCHRP). The NCHR... 展开

    [科技报告]      共239页
    摘要 : This annual report presents a summary of progress on investigations conducted as part of the Innovations Deserving Exploratory Analysis (Highway IDEA) program for the National Cooperative Highway Research Program (NCHRP). The NCHR... 展开

    [科技报告]      共239页
    摘要 : Innovations Deserving Exploratory Analysis (IDEA) program for the National Cooperative Highway Research Program (NCHRP). The NCHRP-IDEA program is jointly funded by the state highway agencies through membership in the American Ass... 展开

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