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APPLICATION OF CAR-FOLLOWING SYSTEMS TO QUEUE DISCHARGE PROBLEM AT SIGNALIZED INTERSECTIONS.
| 题名： | APPLICATION OF CAR-FOLLOWING SYSTEMS TO QUEUE DISCHARGE PROBLEM AT SIGNALIZED INTERSECTIONS. |
| 作者： | Cohen-SL |
| 关键词： | Calibration-; Car-following; Free-flow-speeds; Headways-; Lane-changing; Queue-discharge-problem; Signalized-intersections; Spreadsheets-; Traffic-queuing; Validation- |
| 摘要： | The queue discharge problem at a signalized intersection was analyzed with application of the modified Pitt car-following system. The Pitt car-following system was implemented on an Excel spreadsheet in the form of a prototype simulation model. The situation consisted of a single intersection in which discharging vehicles were unconstrained by downstream conditions. It was asserted that the car-following parameters used in the queue discharge problem are significantly different from those used in the uninterrupted-flow problem and that this is consistent with the two-fluid model. A number of scenarios were executed for each situation, using the spreadsheet implementation to examine a number of issues, including the effect of the following: free-flow speed, car-following parameter variations, vehicle length, heterogeneous traffic streams, and lane changing. It was shown that all of these issues have significant effects on discharge headways and that the Pitt car-following system has a far wider range of applicability than the simple equal headway model. The intuitiveness of the findings and calibration and validation issues were also addressed. |
| 总页数： | Transportation Research Record. 2002. (1802) pp205-213 (8 Fig., 1 Tab., 10 Ref.) |
| 报告类型： | 科技报告 |
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