Optimizing schedule for improving the traffic impact of work zone on roads |
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Authors: | Hsin-Yun Lee |
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Affiliation: | aDepartment of Civil Engineering, National Ilan University, No. 1, Section 1, Shennong Road, I-Lan City 26047, Taiwan |
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Abstract: | Many different types of construction projects set up work zones on roads. Especially in urban areas, lane closures as a result of work zones have a considerable impact on local traffic. However, for a construction project that consists of several work zones and several work crews, the traffic impact may be improved by appropriate scheduling. Therefore, this paper proposed a scheduling model based on the route-changing behavior of road users. The proposed model calculates the traffic delay of vehicles by microscopic simulation, and applies team ant colony optimization to search for a near-optimal schedule. The project planner then ensures that the contractor executes the activities according to the near-optimal schedule. The proposed model is applied to schedule a sewer system construction project in a city. The results of our study indicate that with our proposed model the total traffic delay is reduced by 11.1% when compared with a schedule proposed by the project planner. |
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Keywords: | Work zone Traffic impact Road user behavior Ant colony optimization Microscopic simulation |
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