Evaluation and Improvement of Traffic Operations at Roundabout Intersection

Mansoor, Yousif A.; Zhang, Zhiqiang

doi:10.1061/41184(419)36

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies show that traffic demand and congestions have grown rapidly in Baghdad in the recent years. As no single solution or technology that can solve the traffic congestion issues all by itself, optimization strategies by using simulation models can be applied to signal timing and road capacity analysis to tackle the problem (Al-Jabbar et al 2011;Bertini & Cassidy 2002;Yousif & Zhang 2011).…”

Section: Introductionmentioning

confidence: 99%

Development of Roundabout Delay Models Using Traffic Simulation Programs: A Case Study at Al-Mansour City, Iraq

Essa¹,

Ismail²,

Jehad³

et al. 2017

JKUKM

View full text Add to dashboard Cite

Due to the increased number of vehicles, shopping centers and rapid growth population of Al-Mansour city, daily trips have been increasing besides generating traffic congestion in major roundabouts in the city. Those will make developing an imperial delay model in roundabouts important due to the traffic and geometric influences. Therefore, two major roundabouts have been selected in the city to be taken as a case study. Geometric features for the selected roundabouts have been measured accurately by satellite images via ArcGIS. Traffic and geometric data analysis indicate that both are significantly important on delay models. The delay time produced by SIDRA and SYNCHRO has been compared with the delay time measured from the field. A significant difference in delay for roundabouts is noticed. This difference could be attributed to the difference in driver behaviour. Ideal saturation flow is the main factor related to driver behaviour, so it adjusted to be the average of the saturation flow measured from the field (2200 vphgpl).

show abstract

Section: Introductionmentioning

confidence: 99%