Assessment of Different Intersection Designs to Accommodate Left Turns through Indirect Maneuvers

Assessment of Different Intersection Designs to Accommodate Left Turns through Indirect Maneuvers

Hassan T Abdelwahab

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Hatem Abou-Senna

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Essam Radwan

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University of Central Florida

Assessment of Different Intersection Designs to Accommodate Left Turns through Indirect Maneuvers

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Abstract

Although there are studies that compared between indirect left-turn treatments such Median U-turn (MUT) or RCUT to the Conventional Intersection (CI) designs, very few have compared between the operational performances of MUT versus RCUT. Furthermore, few studies on the Quadrant Roadway Intersection (QRI) were found in the literature. The main objective of this paper is to assess different designs for the accommodation of left turns through indirect maneuvers. Traffic performance of the proposed intersection designs was evaluated based on micro simulation. The results revealed that the difference between the two designs, RCUT and MUT lies in the amount of traffic rerouted to the crossover intersections. Increasing the traffic downstream of the main intersection to the crossover intersection still has an effect on the main intersection’s operations. Proper design and spacing is needed at the crossover intersection to mitigate this effect. The analysis also showed that at higher volume levels, RCUT throughput becomes restricted compared to the MUT which was attributed to the left turn effect at the main intersection. However, the RCUT showed 52% improvement over the MUT in average speeds. RCUT also showed 66% over MUT in delay savings and one year cost reductions when compared to the conventional intersection at 200% volume level.

References

13 Cites in Article

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Hassan T Abdelwahab. 2018. \u201cAssessment of Different Intersection Designs to Accommodate Left Turns through Indirect Maneuvers\u201d. Global Journal of Research in Engineering - E: Civil & Structural GJRE-E Volume 18 (GJRE Volume 18 Issue E2).

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GJRE Volume 18 Issue E2

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

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Classification

GJRE-E Classification FOR Code: 290804

Submission ReceivedDecember 9, 2017
Peer Review Double Blind
Handling Editor
Accepted January 5, 2018
Published January 15, 2018

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v1.2

Issue date

November 17, 2018

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Article Matrices

Total Score: 133

Country: United States

Subject: Global Journal of Research in Engineering - E: Civil & Structural

Authors: Hassan T Abdelwahab, Hatem Abou-Senna, Essam Radwan (PhD/Dr. count: 0)

View Count (all-time): 194

Total Views (Real + Logic): 3072

Total Downloads (simulated): 1414

Publish Date: 2018 11, Sat

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Total Views: 3072

Total Downloads: 1414

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