Default Values for Capacity and Quality of Service Analyses
| 项目名称： | Default Values for Capacity and Quality of Service Analyses |
| 摘要： | The Year 2000 Highway Capacity Manual (HCM 2000) is the most extensively referenced document on highway capacity and quality-of-service computations in the United States. While the HCM 2000 focuses on providing state-of-the-art methodologies for operational analyses, it is also used in planning and preliminary engineering applications. To assist engineers and planners in applying HCM methodologies, the HCM 2000 includes default values for many of the more difficult-to-obtain input parameters and variables. "A default value is a representative value that may be appropriate in the absence of local data" [HCM 2000]. As a result of insufficient field data, the HCM 2000 recommends only a single default value for many key data items, inadequately reflecting the variety of traffic and facility conditions across the United States. Because of limited resources or inexperience, analysts often use these default values inappropriately. The objectives of this project are to (1) determine appropriate default values for inputs to Highway Capacity Manual (HCM) analyses and (2) to develop a guide to select default values for various applications. |
| 状态： | Completed |
| 资金： | 400000.00 |
| 资助组织： | Federal Highway Administration<==>American Association of State Highway & Transportation Officials (AASHTO)<==>National Cooperative Highway Research Program |
| 项目负责人： | Derr, B Ray |
| 执行机构： | Kittelson and Associates, Incorporated |
| 开始时间： | 20050902 |
| 实际结束时间： | 20070901 |
| 主题领域： | Highways；Operations and Traffic Management |
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