USING QUADRANT ROADWAYS TO IMPROVE ARTERIAL INTERSECTION OPERATIONS
USING QUADRANT ROADWAYS TO IMPROVE ARTERIAL INTERSECTION OPERATIONS
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DOI：
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发表时间：
2000-06
影响因子：
0.3
通讯作者：
J. Reid
中科院分区：
文献类型：
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作者：
J. Reid
在传统的主干道和交叉口设计中，交叉口通行能力受到交叉口直行和左转冲突的限制。该功能提出了一种新的非常规交叉口设计方案：象限道路交叉口（QRI）设计。QRI设计通过在一个十字路口象限中使用额外的道路，消除了主干道/交叉路口的左转运动。通过将所有从主干道和十字路口到象限道路的左转运动路由，主干道和十字路口可以使用简单的两相信号。QRI设计中最重要的元素是每个交叉口的信号操作。为了比较QRI设计与等效常规交叉口的交通运行，创建了析因实验设计。该设计包括几个层次的体积，转向运动的百分比，和方向分裂。选择联邦公路管理局CORSIM微观交通建模软件作为生成准确的交通运行报告的工具，包括几个关键的有效性措施。结果表明，QRI设计可以改善典型干道交叉口的停车延误和系统行程时间。系统行程时间平均减少22%，并在交叉口延误显着改善实现在主要交叉口。QRI设计在较高体积条件下比较最有利。虽然左转行驶距离更大，但QRI设计的左转行驶时间并没有明显大于传统设计。
Under conventional arterial roadway and intersection designs, intersection capacity is constrained by through and left-turn conflicts at the intersection. This feature proposes a new unconventional intersection design alternative: the quadrant roadway intersection (QRI) design. The QRI design removes left-turn movements from main arterial/cross-street intersections through use of an additional roadway in one intersection quadrant. By routing all left-turn movements from the arterial and cross street to the quadrant roadway, the main arterial and cross-street intersection can operate with a simple two-phase signal. The most important element of the QRI design is the signal operation at each intersection. To compare traffic operations of a QRI design with an equivalent conventional intersection, a factorial experiment design was created. The design included several levels of volumes, turning-movement percentages, and directional splits. The Federal Highway Administration CORSIM microscopic traffic-modeling software was the tool selected to generate accurate traffic operation reports, including several key measures of effectiveness. The QRI design was shown to improve stopped-delay and system travel time at typical arterial intersections. An average reduction in system travel time of 22% and significant improvement in intersection delay was realized at the main intersection. The QRI design compared most favorably under higher volume conditions. Although the left-turn travel distance was greater, the QRI design left-turn travel times were not significantly greater than the conventional design.