左转车道对信号交叉路口中轻重型混合交通的排放影响:优化和经验分析
Jieyu Fan1, Aoyong Li2, Anugrah Ilahi3
1Faculty of Engineering, Computer Science and Psychology, Department of Human Factors, Ulm University, Ulm, 89069, Germany.
Heliyon
|May 30, 2023
概括
在城市十字路口优化左转车道可显著减少30%的交通排放 (CO,HC,NOx) 并减少延误. 这项研究强调重型客车.
科学领域:
- 环境科学 环境科学
- 运输工程 运输工程
- 气候行动 气候行动
背景情况:
- 交通运输部门是气候变化的主要贡献者,需要减排战略.
- 城市交叉路口经历了混合交通流的大量排放,包括重型车辆 (HDV) 和轻型车辆 (LDV).
- 左转车道是交通拥堵和十字路口排放的关键点.
研究的目的:
- 优化左转车道设计,以减少城市十字路口的排放 (CO,HC,NOx).
- 分析优化左转车道对交通流量效率和排放水平的影响.
- 开发和验证一个模型来确定最佳的左转车道长度,用于混合交通.
主要方法:
- 使用高精度现场数据 (便携式OBEAS-3000) 开发用于HV和LDV的瞬间排放模型.
- 制定一个量身定制的模型,以确定混合交通流程的最佳左转车道长度.
- 使用VISSIM模拟对模型和分析进行实证验证,以比较优化前后的场景.
主要成果:
- 优化的左转车道战略减少了约30%的CO,HC和NOx排放.
- 在不同入口方向观察到平均交通延误的显著减少 (高达21.09%).
- 最大队列长度大幅下降 (高达79.42%),重型车,尽管体积较小,但是主要的排放贡献者.
结论:
- 优化左转车道长度是缓解城市交叉路口排放和拥堵的有效策略.
- 开发的方法为交通设计师提供了实际指导,以提高交叉路口的效率和环境性能.
- 这项研究强调了考虑车辆类型和运行条件对于有效的排放控制策略的重要性.
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