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Validating Area Occupancy-Based Passenger Car Units and Homogeneous Equivalent Concept under Mixed Traffic Conditions in India
| 题名： | Validating Area Occupancy-Based Passenger Car Units and Homogeneous Equivalent Concept under Mixed Traffic Conditions in India |
| 其他题名： | Elefteriadou,L.,D.Torbic,and N.Webster.1997."Development of passenger car equivalents for freeways,two-lane highways and arterials."Transp.Res.Rec.1572:51-58.https://doi.org/10.3141/1572-07. |
| 正文语种： | 英文 |
| 作者： | Pallav Kumar |
| 关键词： | Passenger car unit (PCU);Urban multilane roads;Heterogeneous traffic;Area occupancy |
| 摘要： | This research work puts an emphasis on passenger car unit (PCU) estimation using different methods on eight-lane divided urban multilane roads using a well-calibrated and validated microsimulation model. In this context, at first, three methods were applied for PCU estimation and were checked for its accuracy, which are: (1) PCU estimation using the TRRL (Transport Road Research Laboratory, UK) definition; (2) PCU estimation using the speed-area ratio concept; and (3) PCU estimation using a newly proposed methodology in this study, which is based on an area occupancy-based matrix solution of simultaneous equations developed between a mixed-traffic scenario and an all-cars traffic scenario. The PCU equivalent flow using three methods, compared with the all-cars scenarios at different flow levels, resulted in mean absolute percentage errors (MAPE) of 6％, 12％, and 7％, respectively. Subsequently in this study, a new concept of homogeneous equivalent is also proposed, which directly converts heterogeneous flow into a homogeneous equivalent using the area occupancy value of a mixed-traffic stream. The concept is tested over varying traffic compositions and different traffic volumes and resulted in a MAPE of 8 to 18％. The output from the present study may be useful to traffic engineers, researchers, and practitioners for getting equivalent flow on different uninterrupted facilities, using this simplified yet scientific methodology. |
| 出版年： | 2018 |
| 论文唯一标识： | P-72Y2018V144N10007 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/JTEPBS.0000184 |
| 期刊名称： | Journal of Transportation Engineering |
| 拼音刊名(出版物代码)： | P-72 |
| 卷： | 144 |
| 期： | 10 |
| 页码： | 48-60 |
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