设置移位左转的纵列式信号交叉口设计及优化
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摘要
为减少交叉口处左转与直行、右转车辆间的冲突,进一步提升交叉口的通行能力,在常规纵列式交叉口的基础上,提出设置移位左转的纵列式交叉口设计。通过将左转车道移位设置以减少左转与其他方向车辆间的冲突,并优化预信号设置、重新组织交通流线,达到提高进口车道利用率的目的。在此基础上,针对设置移位左转的纵列式交叉口,提出了车道标志及渠化、移位左转车道长度、整理区长度、信号配时方案一体化确定及优化模型,给出了模型的线性化转化与求解算法,设计了4种交通情景以验证其在不同情况下的通行能力改善情况。基于敏感性分析,比较了设置移位左转的纵列式交叉口与常规交叉口、纵列式交叉口在不同左转比例下的表现差异。研究结果表明:设置移位左转的纵列式交叉口可显著提升交叉口的通行能力,相比常规交叉口和纵列式交叉口,设置移位左转后交叉口的通行能力分别提升60%～80%、1%～31%;设置移位左转的纵列式交叉口使用有一定的条件,其更适合左转比例较小的情况,而当交叉口左转比例较高时,常规纵列式交叉口表现更优;此外,在交叉口长期不饱和的情况下,设置移位左转的纵列式交叉口对通行能力提升没有意义,且此时移位的左转设置还会引发额外的延误,并可能引起一定的安全问题。
To reduce traffic conflicts at left turns(LT)through right-turn movements and increase the intersection capacity,the concept of tandem intersection(TI)was extended with displaced left-turn(TIDLT).By displacing LT lanes,optimizing pre-signals,and redesigning traffic flow movements,lane utilization could be improved.An optimization model was proposed for the integrated design of lane assignment,the length and number of the displaced LT lanes,and signal control plan.An optimization problem was solved by reducing it into a set of linearprogramming problems.A numerical test was conducted with four scenarios to show the performance of TIDLT.Besides,a sensitivity analysis was demonstrated to compare TIDLT with TI and conventional intersection(CI)under different LT ratios.The results show that TIDLT can improve the capacity of intersections,the capacity is improved by 60%to 80%and 1%to 3%when compared with that by CI and TI,respectively.TIDLT should be applied to optimize utilization.It is more likely to be the best when the LT ratio is low,while TI is more suitable under high LT ratio conditions.Furthermore,TIDLT is not suitable for intersections that are always undersaturated,as extra capacity is not needed in this case,and the displaced LT can lead to more delay time and safety issues.3 tabs,4 figs,25 refs.
To reduce traffic conflicts at left turns(LT)through right-turn movements and increase the intersection capacity,the concept of tandem intersection(TI)was extended with displaced left-turn(TIDLT).By displacing LT lanes,optimizing pre-signals,and redesigning traffic flow movements,lane utilization could be improved.An optimization model was proposed for the integrated design of lane assignment,the length and number of the displaced LT lanes,and signal control plan.An optimization problem was solved by reducing it into a set of linearprogramming problems.A numerical test was conducted with four scenarios to show the performance of TIDLT.Besides,a sensitivity analysis was demonstrated to compare TIDLT with TI and conventional intersection(CI)under different LT ratios.The results show that TIDLT can improve the capacity of intersections,the capacity is improved by 60%to 80%and 1%to 3%when compared with that by CI and TI,respectively.TIDLT should be applied to optimize utilization.It is more likely to be the best when the LT ratio is low,while TI is more suitable under high LT ratio conditions.Furthermore,TIDLT is not suitable for intersections that are always undersaturated,as extra capacity is not needed in this case,and the displaced LT can lead to more delay time and safety issues.3 tabs,4 figs,25 refs.
引文
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[19]ZHOU Y,ZHUANG H.The optimization of lane assignment and signal timing at the tandem intersection with pre-signal[J].Journal of Advanced Transportation,2014,48(4):362-376.
[20]XUAN Y,GAYAH V V,CASSIDY M J,et al.Presignal used to increase bus-and car-carrying capacity at intersections:Theory and experiment[J].Transportation Research Record,2012(2315):191-196.
[21]ALLSOP R E.Estimating the traffic capacity of a signalized road junction[J].Transportation Research,1972,6(3):245-255.
[22]GALLIVAN S,HEYDECKER B.Optimising the control performance of traffic signals at a single junction[J].Transportation Research Part B,1988,22(5):357-370.
[23]WONG C K,WONG S C.A lane-based optimization method for minimizing delay at isolated signal-controlled junctions[J].Journal of Mathematical Modelling and Algorithms,2003,2(4):379-406.
[24]WONG C K,HEYDECKER B G.Optimal allocation of turns to lanes at an isolated signal-controlled junction[J].Transportation Research Part B,2011,45(4):667-681.
[25]陈定江,李有润,沈静珠,等.生态工业园区的MINLP模型[J].过程工程学报,2002,2(1):75-80.CHEN Ding-jiang,LI You-run,SHEN Jing-zhu,et al.A MINLP model of eco-industrial parks[J].The Chinese Journal of Process Engineering,2002,2(1):75-80.
[2]TARAWNEH M.Utilization of auxiliary through lanes at intersections of four-lane,two-way roadways[J].Transportation Research Record,2000(1737):26-33.
[3]吴梦倩,袁黎,崔二娟,等.平面交叉口港湾式左转车道安全设计[J].公路交通技术,2012(2):118-121.WU Meng-qian,YUAN Li,CUI Er-juan,et al.Safety design of harbor type left-turn lane at grade crossing[J].Technology of Highway and Transport,2012(2):118-121.
[4]ZHANG Y,TONG J.Modeling left-turn blockage and capacity at signalized intersection with short left-turn bay[J].Transportation Research Record,2008(2071):71-76.
[5]XUAN Y,DAGANZO C F,CASSIDY M J.Increasing the capacity of signalized intersections with separate left turn phases[J].Transportation Research Part B,2011,45(5):769-781.
[6]傅立骏,郭海锋,董红召.基于动态交通流量的可变车道自适应控制方法[J].科技通报,2011,27(6):899-903.FU Li-jun,GUO Hai-feng,DONG Hong-zhao.An adaptive control method of variable lane based on dynamic traffic flow[J].Bulletin Science and Technology,2011,27(6):899-903.
[7]ZHAO J,MA W,ZHANG H,et al.Increasing the capacity of signalized intersections with dynamic use of exit lanes for left-turn traffic[J].Transportation Research Record,2013(2355):49-59.
[8]YIN Y,LI M,SKABARDONIS A.Offline offset refiner for coordinated actuated signal control systems[J].Journal of Transportation Engineering,2007,133(7):423-432.
[9]MA W,XIE H,LIU Y,et al.Coordinated optimization of signal timings for intersection approach with presignals[J].Transportation Research Record,2013(2355):93-104.
[10]赵冬斌,刘德荣,易建强.基于自适应动态规划的城市交通信号优化控制方法综述[J].自动化学报,2009,35(6):676-681.ZHAO Dong-bin,LIU De-rong,YI Jian-qiang.An overview on the adaptive dynamic programming based urban city traffic signal optimal control[J].Acta Automatica Sinica,2009,35(6):676-681.
[11]GOLDBLATT R,MIER F,FRIEDMAN J.Continuous flow intersections[J].ITE Journal,1994,64(7):35-35.
[12]HUMMER J E.Unconventional left-turn alternatives for urban and suburban arterials-Part one[J].ITEJournal,1998,68(9):26-29.
[13]REID J D.Using quadrant roadways to improve arterial intersection operations[J].ITE Journal,2000,70(6):34-45.
[14]ZHAO J,MA W,HEAD K L,et al.Optimal operation of displaced left-turn intersections:A lane-based approach[J].Transportation Research Part C,2015,61:29-48.
[15]ZHAO J,MA W,HEAD K L,et al.Optimal intersection operation with median U-turn:Lane-based approach[J].Transportation Research Record,2014(2439):71-82.
[16]YAN C,JIANG H,XIE S.Capacity optimization of an isolated intersection under the phase swap sorting strategy[J].Transportation Research Part B,2014,60:85-106.
[17]智慧交通114.深圳“排阵式”交通控制方式应用情况及效果[EB/OL].(2017-06-05)[2018-12-15]http://www.sohu.com/a/146249946_649849.ITS114.Application of tandem intersections in Shenzhen and performance analysis[EB/OL].(2017-06-05)[2018-12-15]http://www.sohu.com/a/146249946_649849.
[18]YANG Q,SHI Z.Performance analysis of the phase swap sorting strategy for an isolated intersection[J].Transportation Research Part C,2017,77:366-388.
[19]ZHOU Y,ZHUANG H.The optimization of lane assignment and signal timing at the tandem intersection with pre-signal[J].Journal of Advanced Transportation,2014,48(4):362-376.
[20]XUAN Y,GAYAH V V,CASSIDY M J,et al.Presignal used to increase bus-and car-carrying capacity at intersections:Theory and experiment[J].Transportation Research Record,2012(2315):191-196.
[21]ALLSOP R E.Estimating the traffic capacity of a signalized road junction[J].Transportation Research,1972,6(3):245-255.
[22]GALLIVAN S,HEYDECKER B.Optimising the control performance of traffic signals at a single junction[J].Transportation Research Part B,1988,22(5):357-370.
[23]WONG C K,WONG S C.A lane-based optimization method for minimizing delay at isolated signal-controlled junctions[J].Journal of Mathematical Modelling and Algorithms,2003,2(4):379-406.
[24]WONG C K,HEYDECKER B G.Optimal allocation of turns to lanes at an isolated signal-controlled junction[J].Transportation Research Part B,2011,45(4):667-681.
[25]陈定江,李有润,沈静珠,等.生态工业园区的MINLP模型[J].过程工程学报,2002,2(1):75-80.CHEN Ding-jiang,LI You-run,SHEN Jing-zhu,et al.A MINLP model of eco-industrial parks[J].The Chinese Journal of Process Engineering,2002,2(1):75-80.