Cost–Benefit Analysis of Unconventional Arterial Intersection Designs: Cairo as a Case Study

Sherif Shokry, Shinji Tanaka and Amr M. Wahaballa ()
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Sherif Shokry: The Center of Road Traffic Safety, Naif Arab University for Security Sciences, Riyadh 11452, Saudi Arabia
Shinji Tanaka: Graduate School of Urban Innovation, Yokohama National University, Yokohama 240-8501, Japan
Amr M. Wahaballa: Civil Engineering Department, Faculty of Engineering, Aswan University, Aswan 81542, Egypt

Sustainability, 2022, vol. 14, issue 24, 1-17

Abstract: Due to their innovative treatment, Unconventional Arterial Intersection Designs (UAIDs) have been developed to alleviate congestion at conventional signalized intersections, in an effort towards the sustainable development of crowded capitals. A methodological framework for economic assessment, however, has not been investigated properly for such designs, particularly under mixed traffic environments. This article aims to outline a methodological framework that can be followed for the socio-economic assessment of such designs. A cost–benefit analysis approach was developed to figure out the different determinants of costs and benefits of an overpass interchange (as a widespread treatment) and two selected UAIDs (as alternative measures). The two studied UAID schemes in this article are Continuous Flow Intersection (CFI) and Restricted Crossing U-Turn (RCUT). Seeking credible results, a set of three signalized intersections in downtown Cairo, Egypt was selected as a proof-of-concept for the developed method. PTV-VISSIM, a simulation-based platform, was utilized to estimate the benefits gained by road users. Our research objectives were to identify, evaluate, and compare the economic feasibility of the different alternatives. Compared to the overpass intersection, we found that the CFI and RCUT designs ensure higher economic efficiency, while mitigating congestion at conventional signalized intersections under heterogeneous traffic conditions.

Keywords: Unconventional Arterial Intersection Designs (UAIDs); socio-economic assessment; methodological framework; cost–benefit analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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