Evaluating the Operational Impact of Left-Turn Exclusive Number of Lanes: A Case Study from Qatar
المؤلف | Shaaban, Khaled| Ghanim, Mohammad S. |
تاريخ الإتاحة | 2020-04-30T12:59:33Z |
تاريخ النشر | 2020 |
اسم المنشور | Proceedings of the International Conference on Civil Infrastructure and Construction |
الاقتباس | Shaaban K., Ghanim M. S., Evaluating the Operational Impact of Left-Turn Exclusive Number of Lanes: A Case Study from Qatar, International Conference on Civil Infrastructure and Construction (CIC 2020), Doha, Qatar, 2-5 February 2020, DOI: https://doi.org/10.29117/cic.2020.0075 |
الرقم المعياري الدولي للكتاب | 2958-3128 |
المعرّف | P. O. Box: 2713 Doha-Qatar, Email: qupress@qu.edu.qa |
الملخص | Left-turning movements can significantly reduce the overall capacity of signalized intersections due to the queueing built up. Intersections with heavy left-turning volumes tend to use multiple lanes to accommodate left-turn movements, such as double and triple left-turn lanes. This study compares the potential impact of different left-turn configurations for saturated/near saturated levels. A signalized intersection located in the city of Doha, Qatar, is selected to be examined and evaluated. A microscopic simulation approach is used to replicate the existing conditions before implementing different traffic demands, left-turn bay configurations, and traffic control parameters. The results suggest that signalized intersections, in general, and left-turn movements, in particular, benefit from multiple left-turn lanes. However, the anticipated operational benefits vary depending on several factors, such as the demand for left-turn movements and the length of the left-turn bay. The findings obtained from this study could be helpful for planners and decision-makers to decide the type of left-turn lane treatment needed to increase the capacity for different conditions. This work can be extended to mathematically quantify the expected operational improvements at signalized intersections |
اللغة | en |
الناشر | Qatar Univesrity Press |
الموضوع | Micro-simulation Traffic signal Intersection Left turn Traffic operations |
النوع | Conference |
الصفحات | 596-603 |
ESSN | 2958-3136 |
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