Analysis of Control Type Selection at Three-Leg Intersections | ||||
| ERJ. Engineering Research Journal | ||||
| Articles in Press, Accepted Manuscript, Available Online from 06 August 2025 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2025.377433.1402 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mohamed F. Tag  1; Ibrahim H. Hashim2; sherif M. Elbadawy3
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| 1Department of Civil Engineering, Menoufia University, Egypt | ||||
| 2Civil Eng. Dept., Faculty of Eng., Menoufia University, Shebin El-kom, Egypt | ||||
| 3civil Eng. Dept. faculty of Eng. Mansoura university. Egypt | ||||
| Abstract | ||||
| Intersection is critical components of an urban transportation network, and the control types of the intersections have an important influence on the traffic flow. Thus, this paper's primary objective will be to compare several traffic control systems at junctions with various features and choose the best one based on level-of-service (effective capacity and average delay). Using macro-simulation software called SIDRA, this research attempts to give a comparative analysis of the operational efficiency of three-leg intersections with various control types under a variety of traffic situations with varying volume and turning ratios. Also, it has assessed and compared the operational performance of four control type at 3-leg intersection types namely three-leg with yield sign, three-leg with stop sign, three-leg with signal, and three-leg roundabout using SIDRA software. Each of the four control types investigated in this study found to have some advantages over others under certain traffic conditions. At low approach volume, three-leg with yield sign perform the best while three-leg roundabout perform the best at moderate approach volume. Three-leg with signal outperform all other forms of intersection control at high approach volume. The comparison criteria were the average delay and effective capacity of all vehicles at all movements for every control type. For four control type at 3-leg intersection, the increasing of left-turn traffic percentage always generated higher average delays of all vehicles at all movements. Under unbalanced volume scenarios, the average delay increases with the increase of main and/or cross street volumes for four control type. | ||||
| Keywords | ||||
| intersection; SIDRA; operational efficiency; Stop Sign; roundabout | ||||
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