In this paper a new multi-class urban traffic model is proposed based on the features of a single-class urban traffic model and the characteristics of a multi-class freeway traffic model. The heterogeneous traffic flow is represented using the concept of Passenger Car Equivalent (PCE) for congestion and free-flow regimes separately. The proposed multi-class urban traffic model is intended for model-based control applications. The single-class model and the proposed multi-class traffic model are compared with microscopic simulation data obtained using the SUMO (Simulation of Urban MObility) open-source simulator. The two models are calibrated through optimal parameter estimation and their performance is evaluated and compared by taking into account the error index between the models and the simulation data. Simulation results show that the multi-class model gives a significantly better fit.

基于单类城市交通模型的特点和多类高速公路交通模型的特点，提出了一种新的多类城市交通模型。分别使用拥挤和自由流方式的“当量车等效量”（PCE）的概念表示异构流量。拟议的多类城市交通模型旨在用于基于模型的控制应用。将单类模型和建议的多类交通模型与使用SUMO（城市交通模拟）开源模拟器获得的微观模拟数据进行比较。通过优化参数估计来校准两个模型，并通过考虑模型与仿真数据之间的误差指标来评估和比较它们的性能。