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Preliminary communication
https://doi.org/10.7307/ptt.v30i6.2940

Discharge Flow Rate Change Under Rainy Conditions on Urban Motorways

Göker Aksoy   ORCID icon orcid.org/0000-0003-4592-7048 ; Istanbul Technical University
Kemal Selçuk Öğüt ; Istanbul Technical University

Fulltext: english, PDF (2 MB) pages 733-744 downloads: 218* cite
APA 6th Edition
Aksoy, G. & Selçuk Öğüt, K. (2018). Discharge Flow Rate Change Under Rainy Conditions on Urban Motorways. Promet - Traffic&Transportation, 30 (6), 733-744. https://doi.org/10.7307/ptt.v30i6.2940
MLA 8th Edition
Aksoy, Göker and Kemal Selçuk Öğüt. "Discharge Flow Rate Change Under Rainy Conditions on Urban Motorways." Promet - Traffic&Transportation, vol. 30, no. 6, 2018, pp. 733-744. https://doi.org/10.7307/ptt.v30i6.2940. Accessed 7 Dec. 2021.
Chicago 17th Edition
Aksoy, Göker and Kemal Selçuk Öğüt. "Discharge Flow Rate Change Under Rainy Conditions on Urban Motorways." Promet - Traffic&Transportation 30, no. 6 (2018): 733-744. https://doi.org/10.7307/ptt.v30i6.2940
Harvard
Aksoy, G., and Selçuk Öğüt, K. (2018). 'Discharge Flow Rate Change Under Rainy Conditions on Urban Motorways', Promet - Traffic&Transportation, 30(6), pp. 733-744. https://doi.org/10.7307/ptt.v30i6.2940
Vancouver
Aksoy G, Selçuk Öğüt K. Discharge Flow Rate Change Under Rainy Conditions on Urban Motorways. Promet - Traffic&Transportation [Internet]. 2018 [cited 2021 December 07];30(6):733-744. https://doi.org/10.7307/ptt.v30i6.2940
IEEE
G. Aksoy and K. Selçuk Öğüt, "Discharge Flow Rate Change Under Rainy Conditions on Urban Motorways", Promet - Traffic&Transportation, vol.30, no. 6, pp. 733-744, 2018. [Online]. https://doi.org/10.7307/ptt.v30i6.2940

Abstracts

Queue discharge flow is the most frequently observed phenomenon on urban motorways when demand exceeds capacity. Once a queue is formed, congestion arises, and the number of vehicles that can pass from downstream reduces. This reduction phenomenon is defined as the capacity drop and calculated by taking the difference between capacity and discharge flow at a road section. Obviously, this capacity drop exists after an onset of congestion and may increase in relation to weather conditions, such as rain, snow, or fog, which cause longer queues and delays. In this paper, the effect of rain on discharge flows is investigated and compared with sunny days on Istanbul urban motorways. Besides, rain precipitation during congestion is considered and related to discharge flow. Four different motorway sections were analyzed, and up to 37% discharge flow reduction was determined between sunny and rainy conditions. Motorway sections with higher free flow speed (FFS) were found to be more affected by rain, and discharge flow reduction was bigger compared to the section with the lowest FFS. For 1 mm/m2/h of precipitation, the discharge flow is estimated as 1,719 pcu/h/lane when FFS is 84 km/h, and as 1,560 pcu/h/lane if FFS is 104 km/h.

Hrčak ID: 214144

URI
https://hrcak.srce.hr/214144

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