原文传递
Developing Passenger-Car Equivalents for Heavy Vehicles in Entry Flow at Roundabouts
| 题名： | Developing Passenger-Car Equivalents for Heavy Vehicles in Entry Flow at Roundabouts |
| 其他题名： | AASHTO.(2011).A policy on geometric design of highways and streets,6th Ed.,Washington,DC. |
| 正文语种： | 英文 |
| 作者： | Chris Lee |
| 关键词： | Passenger-car equivalent;Roundabout;Heavy vehicle;Capacity;Critical headway;Follow-up headway |
| 摘要： | This study develops passenger-car equivalents (PCEs) for heavy vehicles at roundabouts. For this task, the movements of cars and heavy vehicles were observed using video records collected from three roundabouts in Vermont; Ontario, Canada; and Wisconsin. The PCE was developed such that the variation in the entry capacity in a various mix of cars and heavy vehicles was minimized. The PCE was also applied to the prediction of the entry capacity using a roundabout capacity model. For the model inputs, the study adjusted the critical headway and the follow-up headway to account for the difference in driver's gap acceptance behavior between cars and heavy vehicles. The result shows that the PCEs for heavy trucks and light trucks are 1.5-2.5 and 1.0-1.5, respectively, at the three roundabouts. In particular, the PCE for light trucks was lower than a default value of 2.0. The result also shows that the established model generally predicted the capacity more accurately when the critical headway and the follow-up headway were adjusted by different weights instead of the same weight (i.e., the default value of the PCE). |
| 出版年： | 2015 |
| 论文唯一标识： | P-72Y2015V141N08006 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)TE.1943-5436.0000775 |
| 期刊名称： | Journal of Transportation Engineering |
| 拼音刊名(出版物代码)： | P-72 |
| 卷： | 141 |
| 期： | 08 |
| 页码： | 35-41 |
相关文献
- Impact of Heavy Vehicles on Highway Traffic Flows: Case Study in the Seoul Metropolitan Area
- Developing Highway Capacity Manual Capacity Adjustment Factors for Connected and Automated Traffic on Roundabouts
- New Approach for Estimating Passenger Car Units on Multilane Urban Roads with Heterogeneous Traffic Conditions
- Incorporating bus delay minimization in design of signal progression for arterials accommodating heavy mixed-traffic flows
- Turbo-Roundabout: Case Study of Driver Behavior and Kinematic Parameters of Light and Heavy Vehicles
- Capacity Predictions and Capacity Passenger Car Equivalents of Platooning Vehicles on Basic Segments
检索历史
应用推荐
