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原文传递 Improved Method of Using Traffic Estimates to Evaluate Intersection Improvements.

题名：	Improved Method of Using Traffic Estimates to Evaluate Intersection Improvements.
作者：	schurr, k. s. movva, k. c. zhang, l.
关键词：	traffic estimates,intersections,evaluation/traffic flow, traffic volume, traffic engineering, design, traffic control, regression analysis, nebraska, traffic counts, two lane roads, traffic data analysis, statistical data, urban areas, rural areas, freeways/peak hour volume
摘要：	Traffic volume estimating is necessary for planning, designing and maintaining a reasonable quality of service along roadway networks. Reliable estimation of traffic volumes is needed to realistically assess problems and determine appropriate solutions that meet the expectations of the traveling public. Regression equations were developed to find the relationship between average peak hour volume and the design volume/average annual daily traffic to ensure the appropriate design of geometric and traffic control improvements that best fit traffic characteristics in Nebraska. Basic linear regression equations were used to extrapolate the number of hours in a year that have more volume than the average peak hour volume in a given year. It was found that the average peak hour was equivalent to about the power of 270 highest hourly volume of a typical year. This value is the average number of hours during which the average peak hour volume was exceeded for a specific year. Therefore, use of average PHV as an estimate for design may not be appropriate for Nebraska or at least must be understood by practitioners as a value that can be exceeded many, many times during the year. / NOTE: Final rept. for Jul 02 Mar 08. / Supplementary Notes: Sponsored by Department of Transportation, Washington, DC. Research and Special Programs Administration. and Nebraska State Dept. of Roads, Lincoln. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
报告类型：	科技报告