The intersection control and management can alleviate the traffic congestion caused by traffic incidents. Therefore, it becomes essential to develop a signal optimization method for intersections influenced by traffic incidents, which will be beneficial to prevent congestion spreading. In this paper, the proposed model is capable of maximizing the intersection throughput by comprehensively considering the queue length as the penalty value. The headway of leaving vehicles is assumed to follow the Cowan’s M3 headway distribution, where formulas for queue length can be derived based on gap acceptance theory. To satisfy the conditions for efficiently identifying feasible solutions in a short time, a heuristic algorithm (simulated annealing algorithm) is employed to solve the model. The numerical results can validate that the proposed method can solve the problem more efficiently and alleviate the intersection congestion caused by the incidents more desirably. When the incident occurs away from the intersection stop line, the impacts on intersection throughput will be gradually weakened. The proposed method is capable of improving the signalized intersection throughput while preventing the congestion from spreading to the upstream intersection.

中文翻译：

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交通事故路口信号配时优化模型

交叉口的控制管理可以缓解交通事故引起的交通拥堵。因此，开发一种针对交通事故影响的十字路口的信号优化方法至关重要，这对于防止拥塞扩散将是有益的。本文提出的模型能够通过综合考虑队列长度作为惩罚值来最大化路口吞吐量。假设驶离车辆的车头间距遵循Cowan的M3车头间距分布，其中队列长度的公式可基于差距接受理论得出。为了满足在短时间内有效识别可行解的条件，采用启发式算法（模拟退火算法）求解模型。数值结果验证了所提方法能够更有效地解决该问题，并更理想地减轻由事故引起的交叉口拥堵。当事故发生在交叉路口停止线以外时，对交叉路口通行量的影响将逐渐减弱。所提出的方法能够提高信号交叉口的吞吐量，同时防止拥堵扩散到上游交叉口。