Journal article Open Access

# Performance Analysis of a Roundabout and a 3-leg Intersection Under Heterogeneous Traffic

Abdul Awwal; Aarish Khan

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<foaf:name>School of Civil Engineering, Carleton University, Ottawa, Canada.</foaf:name>
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<dct:title>Performance Analysis of a Roundabout and a 3-leg Intersection Under Heterogeneous Traffic</dct:title>
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<dcat:keyword>Capacity, Level of Service, SIDRA Intersection, Heterogenous Traffic</dcat:keyword>
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<dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2020-09-30</dct:issued>
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<dct:description>&lt;p&gt;This paper addresses the analysis of the operational performance of a roundabout and a 3-legged intersection located in quite a busy area of the Aligarh city. The city has an urban population of around 0.9 million people. The roundabout and 3-legged intersection are located in the close proximity of busy commercial areas and schools. Roundabout that has been taken under consideration is un-signalized and 3- legged intersection is priority controlled. The Current study has been undertaken analyze the operational execution of the two intersections and to pave the way for forthcoming investigations related to improvement of the intersections in the Aligarh District region. Traffic data was accumulated on weekdays during peak periods (5:30 pm to 6:30 pm). Video recording was taken in consideration to accomplish this task. The traffic was categorized in 3 classes; light vehicles, heavy vehicles and bicycles. To execute the evaluation of functioning performance of both intersections, SIDRA INTERSECTION software has been used. Results have shown that both the roundabout and 3-legged intersection are operating nearly at their maximum capacities and Level of Service (LOS) is not adequate for such amount of traffic influx into both the intersections. Volume to capacity (v/c) ratio has revealed that both the roundabout and 3-legged intersection are in an unstable state and roundabout condition is worse than the 3-legged intersection as the heavy vehicle volume influx is quite higher for the roundabout.&lt;/p&gt;</dct:description>
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