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A Review of Traffic Management and Enforcement Problems and Improvement Options at High-volume, High-speed Work Zones in Texas

Gerald L. Ullman

出版	College Station, Tex.: Texas Transportation Institute, Texas A&M University System ; Springfield, Va.: National Technical Information Service, 2001
URL	http://books.google.com.hk/books?id=JYio_ORIQaUC&hl=&source=gbs_api