In the contemporary sustainable urban set up, one of the critical issues adversely affecting the quality of life in urban areas and inflicting immense costs on cities is traffic congestion. Traffic congestion is an outgrowth of increased traffic flow in certain locations of large cities. Recently, urban decision-makers and transportation planners resort to one-way traffic system as an effective traffic management strategy, which has a profound effect on reducing traffic congestion and improving traffic flow, leading to urban sustainability. In the present paper, the authors endeavored to develop a novel methodological framework based on optimization techniques in order to mitigate traffic congestion through one-way traffic network reconfiguration. To test the efficacy of the proposed methodological framework, two cases were analyzed and evaluated: the Sioux Falls transportation network as a medium-sized one and a real-world large-scale transportation network of the city of Isfahan in Iran. Through the first instance, it can be seen that the proposed method can effectively reduce the total travel time in the area of interest by approximately 9%. The numerical results for the transportation network of Isfahan, justified the practical value of the model and solution method through converting proper links to one-way. As the calculation results of two cases have demonstrated, the solution can effectively reduce the total travel time of travelers in a certain congested urban area.

在当代的可持续城市建设中，交通拥堵是严重影响城市生活质量并给城市造成巨大成本的关键问题之一。交通拥堵是大城市某些地区交通流量增加的结果。最近，城市决策者和交通规划者将单向交通系统作为一种有效的交通管理策略，这对减少交通拥堵和改善交通流量具有深远的影响，从而实现了城市的可持续性。在本文中，作者努力开发一种基于优化技术的新方法框架，以通过单向交通网络重构来缓解交通拥堵。为了测试所提出方法框架的有效性，分析并评估了两个案例：苏福尔斯（Sioux Falls）的交通网络是伊朗伊斯法罕（Isfahan）市的一个中型和现实世界的大规模交通网络。通过第一实例，可以看出，所提出的方法可以有效地将感兴趣区域中的总旅行时间减少大约9％。伊斯法罕运输网络的数值结果通过将适当的链接转换为单向，证明了该模型和求解方法的实用价值。正如两个案例的计算结果所表明的那样，该解决方案可以有效地减少某个拥挤市区中旅行者的总旅行时间。可以看出，所提出的方法可以有效地将感兴趣区域中的总旅行时间减少约9％。伊斯法罕运输网络的数值结果通过将适当的链接转换为单向，证明了该模型和求解方法的实用价值。正如两个案例的计算结果所表明的那样，该解决方案可以有效地减少某个拥挤市区中旅行者的总旅行时间。可以看出，所提出的方法可以有效地将感兴趣区域中的总旅行时间减少约9％。伊斯法罕运输网络的数值结果通过将适当的链接转换为单向，证明了该模型和求解方法的实用价值。正如两个案例的计算结果所表明的那样，该解决方案可以有效地减少某个拥挤市区中旅行者的总旅行时间。