原文传递
Highway Capacity Manual Capacity Adjustment Factor Development for Connected and Automated Traffic at Signalized Intersections
| 题名： | Highway Capacity Manual Capacity Adjustment Factor Development for Connected and Automated Traffic at Signalized Intersections |
| 正文语种： | eng |
| 作者： | Adebisi, Adekunle;Guo, Yi;Schroeder, Bastian;Ma, Jiaqi;Cesme, Burak;Bibeka, Apoorba;Morgan, Abby |
| 作者单位： | Univ Cincinnati Dept Civil & Architectural Engn & Construct Manag 722 Baldwin Hall Cincinnati OH 45221 USA;Univ Cincinnati Dept Civil & Architectural Engn & Construct Manag 722 Baldwin Hall Cincinnati OH 45221 USA;Kittelson & Associates Inc 272 North Front St Suite 410 Wilmington NC 28401 USA;Univ Calif Los Angeles Dept Civil & Environm Engn 420 Westwood Plaza 5731 Boelter Hall Los Angeles CA 90095 USA;Kittelson & Associates Inc 300 M St SE Suite 810 Washington DC 20003 USA;Kittelson & Associates Inc 272 N Front St Suite 410 Wilmington NC 28401 USA;Kittelson & Associates Inc 200 SW 1st Ave Suite 1070 Ft Lauderdale FL 33301 USA |
| 关键词： | Connected and automated vehicles (CAVs);Highway Capacity Manual (HCM);Capacity adjustment factors (CAFs);Microscopic simulation;Signalized intersections |
| 摘要： | Connected and automated vehicles (CAVs) will potentially improve transportation system performance. Guidance on the capacity impact of CAVs at different market penetration rates (MPRs) will help agencies to incorporate the effects of CAVs when planning and designing roadways. Traditionally, practitioners have used the Highway Capacity Manual (HCM) to assess capacity and evaluate the quality of service for various facilities and systems. Although several studies have provided insight into the capacity benefits of CAVs, there is a need for quantified CAV effects that can be used to develop HCM guidance. In this study, the capacity benefits of CAVs at signalized intersections were estimated, and capacity adjustment factors (CAFs) were developed for the HCM. The researchers considered variations in CAV gap/headway settings, platoon lengths, turning movement types (through and left), and left-turn phasing modes (protected versus permitted). Microscopic traffic simulation was used to model CAVs. The results showed that performance indicators such as saturation headway gradually improved with increases in CAV MPR, resulting in up to 40% capacity increase at 100% MPR for the protected movements. For permitted left turns, up to 45% capacity increase could be achieved at 100% MPR. This increase in permitted left-turn capacity can be attributed to vehicle-to-vehicle (V2V) communication, which provides advanced information on available gaps in conflicting traffic and reduced follow-up headway time both for permitted left turns and the opposing through movement. Based on the capacity results, this study provides CAF tables for CAVs that can be easily integrated into the HCM and used for planning-level guidance by practitioners. |
| 出版年： | 2022 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | 148 |
| 期： | 3 |
| 页码： | 04021121.1-04021121.12 |
相关文献
- Developing Highway Capacity Manual Capacity Adjustment Factors for Connected and Automated Traffic on Roundabouts
- Developing Highway Capacity Manual Capacity Adjustment Factors for Connected and Automated Traffic at Two-Way Stop-Controlled Intersections
- Effect of Red-Light Cameras on Capacity of Signalized Intersections
- Advancing Advance Vehicle Detection
- COMPUTATION OF TIME DELAY AT SIGNALIZED INTERSECTION
- Delay at Signalized Intersections under Mixed Traffic Conditions
检索历史
应用推荐
