Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection

Akhtar Hossain; Arfan Siddiquee Sazid; Rakibul Hasan

doi:doi:10.11648/j.ijtet.20241001.11

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Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection

Akhtar Hossain, Arfan Siddiquee Sazid^*

, Rakibul Hasan

Published in International Journal of Transportation Engineering and Technology (Volume 10, Issue 1)

Received: 14 May 2024 Accepted: 5 June 2024 Published: 26 June 2024

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Abstract

This study investigates traffic flow challenges at the bustling Mintu Chattar roundabout Situated in Laxmipur Mor, Rajshahi, Bangladesh. Located in close proximity to a hub of hospitals and medical establishments, this intersection routinely witnesses traffic congestion, becoming a familiar occurrence in the area. From dawn to dusk, traffic officers are required to step in to manage the traffic flow of countless individuals commuting to hospitals, workplaces, educational institutions, and other destinations. Our capacity analysis using Sidra Intersection software reveals significant bottlenecks, particularly during peak hours, necessitating traffic police intervention due to inadequate control measures. The research identifies key contributing factors: insufficient entry and circulatory lanes, uneven traffic distribution, and high overall traffic volume. A detailed case study of the south leg highlights the severity of the situation, with Level of Service (LOS) dropping to F during evening hours, resulting in long queues (over 61 vehicles) and delays exceeding 82 seconds per vehicle. The integration of the design life model from SIDRA software has also illustrated the correlation between Level of Service (LOS) and capacity with the projected rise in traffic volume for the next five years. In order to improve traffic flow efficiency, the study proposes exploring design optimization of the roundabout. This includes investigating the impact of geometric redesigning, such as gradual expansion of approach lanes width, on capacity at the roundabout leg, considering both existing and future traffic scenarios.

Published in	International Journal of Transportation Engineering and Technology (Volume 10, Issue 1)
DOI	10.11648/j.ijtet.20241001.11
Page(s)	1-14
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Level of Service (LOS), Capacity, Delay, Degree of Saturation, Sidra Intersection

References

[1]	Akcelik, R. (2005). Roundabouts: Capacity and Performance Analysis. Akcelik 1998 ARR 321, ARRB Transport Research Ltd, Vermont South, Australia.
[2]	Akçelik, R. (1997). Lane by lane modeling of unequal land use and flares at roundabout and signalized intersection. Traffic Engineering & Control, 38(7/8).
[3]	Akçelik, R., & Troutbeck, R. (1991). Implementation of the Australian roundabout analysis method in SIDRA. In Highway Capacity and Level of Service: Proceedings of the International Symposium of Highway Capacity, Karlsruhe, Germany, July 24-27, 1991 (pp. 7-34).
[4]	Federal Highway Administration, U.S. Department of Transportation. (2000). Roundabouts: An informational guide. Publication No. FHWA-RD-00-067.
[5]	Federal Highway Administration, U.S. Department of Transportation. (1997). Traffic flow theory; Chapter 8: Unsignalized Intersection theory. In TRB Special Report 165 (published in 1975, updated 1997).
[6]	Haque, M. R., Rahman, M. A., Hossain, M. B., & Roknuzzaman, M. (2017). Capacity Evaluation of Roundabout Intersections in Khulna Metropolitan City by Using SIDRA. Proceedings of International Conference on Planning, Architecture and Civil Engineering, 9 - 11 February 2017, Rajshahi University of Engineering & Technology, Rajshahi, Bangladesh.
[7]	Kafy, A. A., Niloy, N. R., & Ferdous, L. (2018, August 3). Estimating Traffic Volume to Identify the Level of Service in Major Intersections of Rajshahi, Bangladesh. ResearchGate. https://doi.org/10.13140/RG.2.2.12604.49280
[8]	Macrotrends. (2024). Rajshahi metropolitan population. Retrieved from https://www.macrotrends.net/
[9]	Nambisan, S., & Parimi, V. (2007). A comparative evaluation of the safety performance of roundabouts and traditional intersection controls. ITE Journal (Institute of Transportation Engineers), 77, 18–25.
[10]	Robinson, B. W. (2000). Roundabouts: an informational guide. US Department of Transportation, Federal Highway Administration. Report FWHA-RD-00-067, Washington.
[11]	Rosni, N. F. N., Danial, N. ‘Ain D., Rosli, S. A. A., & Sanik, M. E. (2023). Performance analysis of intersections along Jalan Abdul Rahman using Sidra Intersection 8.0. Multidisciplinary Applied Research and Innovation, 4(2), 92–103.
[12]	Sisiopiku, V. P., & Oh, H. U. (2001). Evaluation of roundabout performance using SIDRA. Journal of Transportation Engineering, ASCE, 127(2).
[13]	Zaman, N. N., & Hossain, Q. S. (2016). Evaluation of the Capacity of a Roundabout in Jessore Municipality by Using SIDRA. In Proceedings of the 3rd International Conference on Civil Engineering for Sustainable Development (ICCESD 2016), 12-14 February 2016, KUET, Khulna, Bangladesh (pp. 1127). ISBN: 978-984-34-0265-3.

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APA Style

Hossain, A., Sazid, A. S., Hasan, R. (2024). Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection. International Journal of Transportation Engineering and Technology, 10(1), 1-14. https://doi.org/10.11648/j.ijtet.20241001.11

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ACS Style

Hossain, A.; Sazid, A. S.; Hasan, R. Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection. Int. J. Transp. Eng. Technol. 2024, 10(1), 1-14. doi: 10.11648/j.ijtet.20241001.11

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AMA Style

Hossain A, Sazid AS, Hasan R. Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection. Int J Transp Eng Technol. 2024;10(1):1-14. doi: 10.11648/j.ijtet.20241001.11

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@article{10.11648/j.ijtet.20241001.11,
  author = {Akhtar Hossain and Arfan Siddiquee Sazid and Rakibul Hasan},
  title = {Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection
},
  journal = {International Journal of Transportation Engineering and Technology},
  volume = {10},
  number = {1},
  pages = {1-14},
  doi = {10.11648/j.ijtet.20241001.11},
  url = {https://doi.org/10.11648/j.ijtet.20241001.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijtet.20241001.11},
  abstract = {This study investigates traffic flow challenges at the bustling Mintu Chattar roundabout Situated in Laxmipur Mor, Rajshahi, Bangladesh. Located in close proximity to a hub of hospitals and medical establishments, this intersection routinely witnesses traffic congestion, becoming a familiar occurrence in the area. From dawn to dusk, traffic officers are required to step in to manage the traffic flow of countless individuals commuting to hospitals, workplaces, educational institutions, and other destinations. Our capacity analysis using Sidra Intersection software reveals significant bottlenecks, particularly during peak hours, necessitating traffic police intervention due to inadequate control measures. The research identifies key contributing factors: insufficient entry and circulatory lanes, uneven traffic distribution, and high overall traffic volume. A detailed case study of the south leg highlights the severity of the situation, with Level of Service (LOS) dropping to F during evening hours, resulting in long queues (over 61 vehicles) and delays exceeding 82 seconds per vehicle. The integration of the design life model from SIDRA software has also illustrated the correlation between Level of Service (LOS) and capacity with the projected rise in traffic volume for the next five years. In order to improve traffic flow efficiency, the study proposes exploring design optimization of the roundabout. This includes investigating the impact of geometric redesigning, such as gradual expansion of approach lanes width, on capacity at the roundabout leg, considering both existing and future traffic scenarios.
},
 year = {2024}
}

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TY  - JOUR
T1  - Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection

AU  - Akhtar Hossain
AU  - Arfan Siddiquee Sazid
AU  - Rakibul Hasan
Y1  - 2024/06/26
PY  - 2024
N1  - https://doi.org/10.11648/j.ijtet.20241001.11
DO  - 10.11648/j.ijtet.20241001.11
T2  - International Journal of Transportation Engineering and Technology
JF  - International Journal of Transportation Engineering and Technology
JO  - International Journal of Transportation Engineering and Technology
SP  - 1
EP  - 14
PB  - Science Publishing Group
SN  - 2575-1751
UR  - https://doi.org/10.11648/j.ijtet.20241001.11
AB  - This study investigates traffic flow challenges at the bustling Mintu Chattar roundabout Situated in Laxmipur Mor, Rajshahi, Bangladesh. Located in close proximity to a hub of hospitals and medical establishments, this intersection routinely witnesses traffic congestion, becoming a familiar occurrence in the area. From dawn to dusk, traffic officers are required to step in to manage the traffic flow of countless individuals commuting to hospitals, workplaces, educational institutions, and other destinations. Our capacity analysis using Sidra Intersection software reveals significant bottlenecks, particularly during peak hours, necessitating traffic police intervention due to inadequate control measures. The research identifies key contributing factors: insufficient entry and circulatory lanes, uneven traffic distribution, and high overall traffic volume. A detailed case study of the south leg highlights the severity of the situation, with Level of Service (LOS) dropping to F during evening hours, resulting in long queues (over 61 vehicles) and delays exceeding 82 seconds per vehicle. The integration of the design life model from SIDRA software has also illustrated the correlation between Level of Service (LOS) and capacity with the projected rise in traffic volume for the next five years. In order to improve traffic flow efficiency, the study proposes exploring design optimization of the roundabout. This includes investigating the impact of geometric redesigning, such as gradual expansion of approach lanes width, on capacity at the roundabout leg, considering both existing and future traffic scenarios.

VL  - 10
IS  - 1
ER  -

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Author Information

Akhtar Hossain

Department of Civil Engineering, Rajshahi University of Engineering & Technology, Rajshahi, Bangladesh

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Arfan Siddiquee Sazid

Department of Civil Engineering, Rajshahi University of Engineering & Technology, Rajshahi, Bangladesh

Contact Email

http://orcid.org/0009-0002-3144-3456
Rakibul Hasan

Department of Civil Engineering, Rajshahi University of Engineering & Technology, Rajshahi, Bangladesh

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APA Style

Hossain, A., Sazid, A. S., Hasan, R. (2024). Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection. International Journal of Transportation Engineering and Technology, 10(1), 1-14. https://doi.org/10.11648/j.ijtet.20241001.11

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ACS Style

Hossain, A.; Sazid, A. S.; Hasan, R. Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection. Int. J. Transp. Eng. Technol. 2024, 10(1), 1-14. doi: 10.11648/j.ijtet.20241001.11

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AMA Style

Hossain A, Sazid AS, Hasan R. Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection. Int J Transp Eng Technol. 2024;10(1):1-14. doi: 10.11648/j.ijtet.20241001.11

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@article{10.11648/j.ijtet.20241001.11,
  author = {Akhtar Hossain and Arfan Siddiquee Sazid and Rakibul Hasan},
  title = {Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection
},
  journal = {International Journal of Transportation Engineering and Technology},
  volume = {10},
  number = {1},
  pages = {1-14},
  doi = {10.11648/j.ijtet.20241001.11},
  url = {https://doi.org/10.11648/j.ijtet.20241001.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijtet.20241001.11},
  abstract = {This study investigates traffic flow challenges at the bustling Mintu Chattar roundabout Situated in Laxmipur Mor, Rajshahi, Bangladesh. Located in close proximity to a hub of hospitals and medical establishments, this intersection routinely witnesses traffic congestion, becoming a familiar occurrence in the area. From dawn to dusk, traffic officers are required to step in to manage the traffic flow of countless individuals commuting to hospitals, workplaces, educational institutions, and other destinations. Our capacity analysis using Sidra Intersection software reveals significant bottlenecks, particularly during peak hours, necessitating traffic police intervention due to inadequate control measures. The research identifies key contributing factors: insufficient entry and circulatory lanes, uneven traffic distribution, and high overall traffic volume. A detailed case study of the south leg highlights the severity of the situation, with Level of Service (LOS) dropping to F during evening hours, resulting in long queues (over 61 vehicles) and delays exceeding 82 seconds per vehicle. The integration of the design life model from SIDRA software has also illustrated the correlation between Level of Service (LOS) and capacity with the projected rise in traffic volume for the next five years. In order to improve traffic flow efficiency, the study proposes exploring design optimization of the roundabout. This includes investigating the impact of geometric redesigning, such as gradual expansion of approach lanes width, on capacity at the roundabout leg, considering both existing and future traffic scenarios.
},
 year = {2024}
}

Copy | Download

TY  - JOUR
T1  - Assessing Level of Service, Capacity and Future Optimization of Roundabouts in Rajshahi City Using Sidra Intersection

AU  - Akhtar Hossain
AU  - Arfan Siddiquee Sazid
AU  - Rakibul Hasan
Y1  - 2024/06/26
PY  - 2024
N1  - https://doi.org/10.11648/j.ijtet.20241001.11
DO  - 10.11648/j.ijtet.20241001.11
T2  - International Journal of Transportation Engineering and Technology
JF  - International Journal of Transportation Engineering and Technology
JO  - International Journal of Transportation Engineering and Technology
SP  - 1
EP  - 14
PB  - Science Publishing Group
SN  - 2575-1751
UR  - https://doi.org/10.11648/j.ijtet.20241001.11
AB  - This study investigates traffic flow challenges at the bustling Mintu Chattar roundabout Situated in Laxmipur Mor, Rajshahi, Bangladesh. Located in close proximity to a hub of hospitals and medical establishments, this intersection routinely witnesses traffic congestion, becoming a familiar occurrence in the area. From dawn to dusk, traffic officers are required to step in to manage the traffic flow of countless individuals commuting to hospitals, workplaces, educational institutions, and other destinations. Our capacity analysis using Sidra Intersection software reveals significant bottlenecks, particularly during peak hours, necessitating traffic police intervention due to inadequate control measures. The research identifies key contributing factors: insufficient entry and circulatory lanes, uneven traffic distribution, and high overall traffic volume. A detailed case study of the south leg highlights the severity of the situation, with Level of Service (LOS) dropping to F during evening hours, resulting in long queues (over 61 vehicles) and delays exceeding 82 seconds per vehicle. The integration of the design life model from SIDRA software has also illustrated the correlation between Level of Service (LOS) and capacity with the projected rise in traffic volume for the next five years. In order to improve traffic flow efficiency, the study proposes exploring design optimization of the roundabout. This includes investigating the impact of geometric redesigning, such as gradual expansion of approach lanes width, on capacity at the roundabout leg, considering both existing and future traffic scenarios.

VL  - 10
IS  - 1
ER  -

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