| Characteristics of Speed Dispersion and Its Relationships with the Fundamental Traffic Flow Parameters in Urban Freeways: A Case Study in Northern California | |
|---|---|
| 學年 | 98 |
| 學期 | 1 |
| 發表日期 | 2010-01-10 |
| 作品名稱 | Characteristics of Speed Dispersion and Its Relationships with the Fundamental Traffic Flow Parameters in Urban Freeways: A Case Study in Northern California |
| 作品名稱（其他語言） | |
| 著者 | Chung, Chih-Lin; Recker, Wilfred W. |
| 作品所屬單位 | 淡江大學運輸管理學系 |
| 出版者 | |
| 會議名稱 | The Transportation Research Board (TRB) 89th Annual Meeting |
| 會議地點 | Washington D.C., U.S.A. |
| 摘要 | This research reveals statistical characteristics of speed dispersion and its relationships with fundamental traffic flow parameters in northern California. Nearly a quarter million vehicle observations of a five-lane urban freeway are examined individually by lane and aggregately for a total of seven categories. Speed dispersion is measured by coefficient of variation of speed (CVS) and standard deviation of speed (SDS). CVS displays an exponential form of occupancy or space mean speed, and is two-phase linear to flow. Variation of CVS is stable and similar across lanes during light traffic, and afterward increases and diverges into three groups. SDS in contrast does not present any simple equation of the fundamental parameters. Both CVS and SDS of the all lane mix are greater than those of other categories given fixed occupancy or mean speed. |
| 關鍵字 | Speed Dispersion;Mean Speed;Flow;Density;Fundamental Diagram |
| 語言 | en_US |
| 收錄於 | |
| 會議性質 | 國際 |
| 校內研討會地點 | 無 |
| 研討會時間 | 20100110~20100114 |
| 通訊作者 | |
| 國別 | USA |
| 公開徵稿 | Y |
| 出版型式 | 電子版 |
| 出處 | The Transportation Research Board (TRB) 89th Annual Meeting |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/92349 ) |
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