Comparing the Saturation Flow Rate on the Exit Lane Between Urban Multilane Roundabouts and Urban Signalized Intersections Through Field Data
Urban multilane roundabouts and signalized intersections are two major roadway devices used for controlling and managing traffic flow. This paper presents a comparative analysis of the saturation flow rate between urban multilane roundabouts and multilane signalized intersections using field data fr...
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| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Infrastructures |
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| Online Access: | https://www.mdpi.com/2412-3811/10/1/15 |
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| author | Nawaf Mohamed Alshabibi |
| author_facet | Nawaf Mohamed Alshabibi |
| author_sort | Nawaf Mohamed Alshabibi |
| collection | DOAJ |
| description | Urban multilane roundabouts and signalized intersections are two major roadway devices used for controlling and managing traffic flow. This paper presents a comparative analysis of the saturation flow rate between urban multilane roundabouts and multilane signalized intersections using field data from the Dammam Metropolitan Area (DMA) in Saudi Arabia. The data of this study were collected at four roundabouts and four signalized intersections in Dammam metropolitan area (DMA), Saudi Arabia. A total of 7028 saturation headways at the roundabouts and 2626 saturation headways at the signalized intersections were included. The results indicated that the signalized intersections had a higher saturation flow rate at the exit lane than the roundabouts at about 1046 vehicles per hour. These findings emphasize that signalized intersections outperform roundabouts in terms of the vehicular movement rate during green lights. Moreover, when the light is green, it takes 1.82 s for a car to move through the middle lane of a traffic light intersection. This study draws a unique connection between speed fluctuations in roundabouts with energy consumption, concluding how vehicles consume more energy this way. Thus, single-lane roundabouts are recommended for optimal traffic flow management in all directions. |
| format | Article |
| id | doaj-art-a4c6b6532e8c42ee8b86d01ebf1c4246 |
| institution | Kabale University |
| issn | 2412-3811 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Infrastructures |
| spelling | doaj-art-a4c6b6532e8c42ee8b86d01ebf1c42462025-01-24T13:35:24ZengMDPI AGInfrastructures2412-38112025-01-011011510.3390/infrastructures10010015Comparing the Saturation Flow Rate on the Exit Lane Between Urban Multilane Roundabouts and Urban Signalized Intersections Through Field DataNawaf Mohamed Alshabibi0Department of Urban and Regional Planning, College of Architecture and Planning, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi ArabiaUrban multilane roundabouts and signalized intersections are two major roadway devices used for controlling and managing traffic flow. This paper presents a comparative analysis of the saturation flow rate between urban multilane roundabouts and multilane signalized intersections using field data from the Dammam Metropolitan Area (DMA) in Saudi Arabia. The data of this study were collected at four roundabouts and four signalized intersections in Dammam metropolitan area (DMA), Saudi Arabia. A total of 7028 saturation headways at the roundabouts and 2626 saturation headways at the signalized intersections were included. The results indicated that the signalized intersections had a higher saturation flow rate at the exit lane than the roundabouts at about 1046 vehicles per hour. These findings emphasize that signalized intersections outperform roundabouts in terms of the vehicular movement rate during green lights. Moreover, when the light is green, it takes 1.82 s for a car to move through the middle lane of a traffic light intersection. This study draws a unique connection between speed fluctuations in roundabouts with energy consumption, concluding how vehicles consume more energy this way. Thus, single-lane roundabouts are recommended for optimal traffic flow management in all directions.https://www.mdpi.com/2412-3811/10/1/15saturation flow rateexit middle through-lanesignalized intersectionroundaboutfield data |
| spellingShingle | Nawaf Mohamed Alshabibi Comparing the Saturation Flow Rate on the Exit Lane Between Urban Multilane Roundabouts and Urban Signalized Intersections Through Field Data Infrastructures saturation flow rate exit middle through-lane signalized intersection roundabout field data |
| title | Comparing the Saturation Flow Rate on the Exit Lane Between Urban Multilane Roundabouts and Urban Signalized Intersections Through Field Data |
| title_full | Comparing the Saturation Flow Rate on the Exit Lane Between Urban Multilane Roundabouts and Urban Signalized Intersections Through Field Data |
| title_fullStr | Comparing the Saturation Flow Rate on the Exit Lane Between Urban Multilane Roundabouts and Urban Signalized Intersections Through Field Data |
| title_full_unstemmed | Comparing the Saturation Flow Rate on the Exit Lane Between Urban Multilane Roundabouts and Urban Signalized Intersections Through Field Data |
| title_short | Comparing the Saturation Flow Rate on the Exit Lane Between Urban Multilane Roundabouts and Urban Signalized Intersections Through Field Data |
| title_sort | comparing the saturation flow rate on the exit lane between urban multilane roundabouts and urban signalized intersections through field data |
| topic | saturation flow rate exit middle through-lane signalized intersection roundabout field data |
| url | https://www.mdpi.com/2412-3811/10/1/15 |
| work_keys_str_mv | AT nawafmohamedalshabibi comparingthesaturationflowrateontheexitlanebetweenurbanmultilaneroundaboutsandurbansignalizedintersectionsthroughfielddata |