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Modeling the fundamental diagram of mixed human-driven and connected automated vehicles
Transportation Research Part C: Emerging Technologies ( IF 8.3 ) Pub Date : 2020-03-24 , DOI: 10.1016/j.trc.2020.102614
Jiazu Zhou , Feng Zhu

Traffic flow fundamental diagram (FD) is viewed as the basis of traffic flow theory and has various applications in transportation. However, the fundamental diagram of mixed human-driven vehicles (HVs) and connected automated vehicles (CAVs) traffic has not been well-studied. This paper derives the FD for mixed HV and CAV traffic considering the stochastic headway. Firstly, the deterministic FD of pure CAV traffic and pure HV traffic are built. Then the FD of mixed HV and CAV traffic is developed with CAV penetration and platooning intensity taken into consideration. A Gaussian mixture model (GMM) is applied to model the stochastic headway, based on which the stochastic FD is derived. Impact of CAV penetration and platooning intensity on the stochasticity of FD is studied. Results from theoretical analysis and case study show that increasing CAV penetration can reduce the scattering of FD, while higher platooning intensity may result in more scattering of FD.



中文翻译:

建模混合动力驱动和互联自动驾驶汽车的基本图

交通流基本图(FD)被视为交通流理论的基础,在交通运输中具有多种应用。但是,尚未充分研究混合动力驾驶汽车(HV)和联网自动驾驶汽车(CAV)交通的基本图。考虑到随机行进,本文得出了混合HV和CAV交通的FD。首先,建立了纯CAV流量和纯HV流量的确定性FD。然后,在考虑到CAV渗透率和排强度的情况下,开发混合HV和CAV交通的FD。应用高斯混合模型(GMM)对随机行进进行建模,并基于此推导随机FD。研究了CAV的穿透力和排强度对FD随机性的影响。

更新日期:2020-03-24
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