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Application of nontraditional interchange treatments to improve quality of service and preserve the service life of narrow over- and underpass roadways.

机译：非传统立交处理的应用可提高服务质量并保持狭窄的高架和地下通道的使用寿命。

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摘要

Handling increasing traffic without causing congestion on the arterials or spillbacks on the freeway is one of the major problems for a traditional diamond interchange with narrow arterial overpass. Often widening the roadway is seen as a solution to solve this problem, but the cost incurred in widening an overpass is high. On the other hand, there are non-traditional interchange treatments which make use of innovative signal phases and geometric design that can effectively handle the increasing traffic without causing spillbacks on the freeway or congestion on the arterials, which are less expensive than traditional widening treatment.;This study focuses on evaluating and comparing the effectiveness of eight traditional and nontraditional interchange treatments using the VISSIM microscopic traffic simulation model. The non-traditional treatments discussed are Texas 3-phase interchange, Texas 4-phase interchange, Tight Urban Diamond Interchange, Tight Urban Diamond Interchange with reversing lanes interchange, Double Roundabout interchange, and Diverging Diamond Interchange. Texas 3-phase and Texas 4-phase treatments controls both the intersection with one controller and signal phases are changed in a sequential order. Tight Urban Interchanges bring both the intersections close together and control as one. Tight Urban Diamond Interchange with reversing lanes brings both the intersections closer and uses the arterial overpass between as reversible lanes. Double roundabout replaces both the intersections by roundabouts. Diverging Diamond interchange crosses arterial traffic on the left side on to avoid the conflicting left turns from and to the ramps and again crosses the traffic back to the right side. These evaluations were done for three congested interchanges in Tennessee with narrow overpass: I-75 at APD 40, Bradley County, I-40 at Genesis Road, Cumberland County, I-40/I-75 at Watt Road, Knox County. Simulations were carried out to evaluate and compare each treatment at different volume levels from 100% of current volume up to its failure or 190% of current volume with 10% increment. The traditional widening treatment is seen as an optimal solution and all other nontraditional treatments are compared to it. The results indicated that these nontraditional treatments could be good alternate treatments that can be implemented at an interchange to mitigate the congestion on the arterials as well as spillbacks on to the freeway caused by excess traffic.
机译：对于交通拥堵而又不引起高速公路拥堵或高速公路后溢的处理，这是具有狭窄动脉立交桥的传统钻石交汇处的主要问题之一。通常，拓宽车道被认为是解决此问题的解决方案，但是拓宽天桥的成本很高。另一方面，有一些非传统的互换治疗方法利用了创新的信号相位和几何设计，可以有效地应对不断增加的交通量，而又不会引起高速公路上的溢流或动脉拥堵，这比传统的加宽治疗便宜。 ；本研究着重使用VISSIM微观交通模拟模型评估和比较八种传统和非传统交换治疗的有效性。讨论的非传统处理方法是德州3相互换，德州4相互换，紧凑城市钻石互换，带有反向车道互换的紧凑城市钻石互换，双环形交叉路口互换和发散钻石互换。德州3相和德州4相处理可控制与一个控制器相交的位置，并且信号相位按顺序更改。紧密的城市交汇处使两个交汇处紧密并统一控制。具有反向车道的紧凑型城市钻石交汇处使两个交叉路口更近，并且使用之间的动脉立交桥作为可逆车道。双回旋处以回旋处替换了两个交叉路口。分开的Diamond交叉路口在左侧穿过交通流量，以避免与匝道之间的左转弯冲突，并再次将交通流量返回右侧。这些评估是针对田纳西州三座拥堵的立交桥进行的：立交桥APD 40的I-75，坎伯兰县创世纪路的I-40，诺克斯县瓦特路的I-40 / I-75。进行了仿真，以评估和比较从100％当前体积到失败或190％当前体积（以10％递增）的不同体积水平下的每种处理。传统的加宽治疗被视为最佳解决方案，并且将所有其他非传统治疗与之进行了比较。结果表明，这些非传统的处理方法可能是很好的替代处理方法，可以在互换处实施，以减轻因交通拥堵而引起的交通拥堵以及高速公路溢出。

著录项

  • 作者

    Mahendran, Ashok Kumar.;

  • 作者单位

    Tennessee Technological University.;

  • 授予单位 Tennessee Technological University.;
  • 学科 Engineering Civil.;Transportation.
  • 学位 M.S.
  • 年度 2009
  • 页码 157 p.
  • 总页数 157
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;综合运输;
  • 关键词

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