An extended car-following model considering vehicular gap fluctuation

An extended car-following model considering vehicular gap fluctuation
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考虑车距波动的扩展跟驰模型

DOI:
10.1016/j.measurement.2015.03.031
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发表时间:
2015-06
期刊:
影响因子:
5.6
通讯作者:
Shi Zhongke
Shi Zhongke
中科院分区:
工程技术2区
文献类型:
--
作者:
Yu Shaowei;Shi Zhongke

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为探讨和评价车距波动对道路交通流动性、燃油经济性和尾气排放的影响,利用实测跟驰数据分析了车距波动与跟驰车辆加减速的关系,并在全速差模型的基础上建立了考虑车距波动的扩展跟驰模型.最后,通过数值模拟研究了车距波动对汽车速度、加速度、车距、油耗和排放的影响。结果表明,车距波动对交通流的动力学特性、燃油消耗和尾气排放有显著影响,在交通流系统建模中考虑车距波动可以改善交通流的稳定性,提高燃油效率,减少尾气排放。
To explore and evaluate the effects of vehicular gap fluctuation on roadway traffic mobility, fuel economy and exhaust emissions, we first analyzed the linkage between vehicular gap fluctuation and the following car’s acceleration or deceleration with the measured car-following data, and then developed an extended car-following model considering vehicular gap fluctuation based on the full velocity difference model. Finally, numerical simulations are conducted to explore how vehicular gap fluctuation affects car’s velocity, acceleration, vehicular gap, fuel consumptions and exhaust emissions. The results show that vehicular gap fluctuation has significant effects on the dynamic characteristics, fuel consumptions and exhaust emissions of traffic flow, and that considering vehicular gap fluctuation in modeling traffic flow system can improve the stability of traffic flow, increase fuel efficiency and reduce exhaust emissions.
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