原文传递
What Characterizes a Vehicle as Follower on Two-Lane Intercity Highways under Heterogeneous Traffic Conditions
| 题名： | What Characterizes a Vehicle as Follower on Two-Lane Intercity Highways under Heterogeneous Traffic Conditions |
| 其他题名： | Al-Kaisy,A.,and Durbin,C.(2008)."Evaluating new methodologies for estimating performance on two-lane highways."Can.J.Civ.Eng.,35(8),777-785. |
| 正文语种： | 英文 |
| 作者： | Amardeep Boora |
| 关键词： | Two-lane intercity highways;Follower;Speed difference;Gap threshold;Headway threshold |
| 摘要： | The presence of a high proportion of vehicles in the following condition indicates that a particular roadway facility is performing poorly. Due to lack of related standard guidelines, planners and engineers in India use the same definition presented in U.S. Highway Capacity Manual regarding following vehicles, which may not be appropriate because of the heterogeneity in Indian traffic conditions. After performing graphical analysis, it was concluded that the previously used methodologies cannot be used for the present study because it could mislead the final findings. Hence, a new method was introduced to identify following vehicles in which speed difference (SD) and gap threshold value are used instead of the headway between two consecutive vehicles. It was found that after a cut-off gap threshold of 10 s, all the vehicles, irrespective of their categories, started traveling in the nonfollowing condition. A SD limit of -4 to +10 km=h was used to identify the following vehicles below the cut-off gap threshold value of 10 s. By using the acceptance curve method, different cut-off gap values ranging from 1.9 to 4.4 s were observed at all study sites, beyond which probability of not following (PNF) increased. After validation of the results, two-way traffic volume was identified as the dominating parameter that affects the cut-off gap value. |
| 出版年： | 2018 |
| 论文唯一标识： | P-72Y2018V144N02002 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/JTEPBS.0000106 |
| 期刊名称： | Journal of Transportation Engineering |
| 拼音刊名(出版物代码)： | P-72 |
| 卷： | 144 |
| 期： | 02 |
| 页码： | 1-12 |
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