摘要: NULL
原报告号 | PB2009104104 | 总页数 | 248 |
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报告类别/文献类型 | PB / NTIS科技报告 | ||
关键词 | Transportation safety Data analysis Speed limit Motor vehicle accidents Injuries Surveys Traffic congestion Accident prevention Freeways Urban roads Performance evaluation Case studies Texas Intersections Traffic flow Regression analysis |