Emission factor calibration and signal timing optimisation for isolated intersections

Emission factor calibration and signal timing optimisation for isolated intersections
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孤立交叉口的排放因子校准和信号定时优化

DOI:
10.1049/iet-its.2016.0332
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发表时间:
2017-11
影响因子:
2.7
通讯作者:
Lian L.
Lian L.
中科院分区:
工程技术4区
文献类型:
--
作者:
Yao R.H.;Wang X.Y.;Xu H.F.;Lian L.

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信号控制策略不仅对交叉口的运营有很大的影响,而且对交通排放也有很大的影响。首先提出了基本假设。利用逐秒采集的车速和加速度数据,给出了基于车辆比功率的绿色/红色期间排放因子标定的数学表达式。在一定的约束条件下,建立了考虑交通排放的单目标优化模型和双目标优化模型。考虑三个层次的交通需求和两种信号配时方法,利用VISSIM和MATLAB软件包进行了数值算例。研究结果表明:绿色时的排放因子明显大于红色时的排放因子,且各污染物和各车道组的排放因子均保持稳定;科学的信号控制系统可以同时减少单交叉口的车辆延误和交通排放。
Signal control strategy has a huge effect not only on intersection operations but also on traffic emissions. The basic assumptions are first proposed. Using the second-by-second data of vehicular velocity and acceleration, the mathematical expressions are then presented to calibrate the emission factors during green/red on the basis of vehicle-specific power. Given some necessary constraints, a single-objective optimisation model and a bi-objective optimisation model are formulated with the concern of traffic emissions. Considering three levels of traffic demands and two methods of signal timing, the numerical examples are carried out by utilising the VISSIM and MATLAB software packages. The findings indicate that the emission factors during green are explicitly greater than those during red and they are all stable for each pollutant and for each lane group; a scientific signal control system can simultaneously reduce vehicle delay and traffic emissions for isolated intersections.
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