The potential to implement a superstreet as an unconventional arterial intersection design in Korea
The potential to implement a superstreet as an unconventional arterial intersection design in Korea
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DOI：
10.1007/s12205-011-1157-1
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发表时间：
2011-07
影响因子：
2.2
通讯作者：
Jae-pil Moon;Youngrok Kim;Do-Gyeong Kim;Suk-ki Lee
中科院分区：
文献类型：
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作者：
Jae-pil Moon;Youngrok Kim;Do-Gyeong Kim;Suk-ki Lee
韩国城市和郊区的高速公路设施供应没有跟上汽车增长的步伐，导致交通拥堵，道路拥堵加剧了高油耗的运营和安全问题。韩国的交通机构和工程师一直致力于通过智能交通系统(ITS)、需求管理和其他传统措施来缓解拥堵。不幸的是，这些传统的对策在韩国已经用尽，以缓解交通拥堵。从效率和安全的角度来看，超级街道可能是解决交通问题的选择之一。超级街是一个非常规的十字路口，它改变了左转的方向，并通过侧街的移动。该设计理念通过减少主要过境点的冲突点，并像两条单行道一样运行，从两个方向独立控制信号，从而提高了安全性。先前的研究已经回顾了美国北卡罗来纳州实施的超级街道的性能，并表明与现有的传统十字路口设计相比，在运营和安全方面有了显著的改善。本白皮书的目的是洞察实施SuperStreet作为一种有前途的解决方案的潜力，以改善韩国的机动性和安全性。本文评估了与现有设计相比，SuperStreet设计如何在给定的交通环境下有效和安全地处理。采用VISSIM模型模拟交叉路口的运行，采用美国联邦公路管理局(FHWA)开发的替代安全评估模型(SSAM)对微观模拟提取的车辆轨迹数据进行冲突分析，对安全评估进行评估。结果表明，有超级市场的走廊在整个路段上的交通进展最有效，停靠次数最少，延误最少。此外，它还表明，超级市场将有助于减少碰撞。这一结果将足以为交通机构和工程师提供一种有效的替代方案，在减少拥堵的同时提高安全性。
The supply of highway facilities in urban and suburban areas across South Korea has not kept pace with automobile growth, resulting in traffic congestion, and congested roads have contributed to worsen operation and safety problems with high fuel consumption. Traffic agencies and engineers in South Korea have focused on mitigating congestions through Intelligent Transportation Systems (ITS), demand managements, and other conventional measures. Unfortunately, these conventional countermeasures were exhausted in Korea to mitigate traffic congestion. From the viewpoint of efficiency and safety, a superstreet might be one of the alternatives to be considered for solving traffic problems. A superstreet is an unconventional intersection which redirects left turn and through movements from side streets. The design concept leads to increase safety by reducing conflict points at a major crossing point and operating like a pair of one-way streets which signals independently control from the both directions. Prior research have reviewed the performance of the implemented superstreets in North Carolina, U.S and showed a significant improvement in operation and safety compared to existing conventional intersection designs. The purpose of this paper is to provide insight on the potential to implement a superstreet as a promising solution for improving mobility and safety in the South Korea. This paper evaluated how a superstreet design effectively and safely handles with given traffic circumstances compared to an existing design. The VISSIM Model was selected to simulate the operations of subject intersections and Surrogate Safety Assessment Model (SSAM), developed by Federal Highway Administration (FHWA), which performs conflict analysis by processing vehicles trajectory data extracted from micro-simulations, was adopted to evaluate safety estimations. The results showed that the corridor with superstreets have the most effective progression of traffic along the entire road section with the fewest stops and lowest delays. Also it indicated that superstreets would contribute to have a decrease in collisions. The results would suffice to provide traffic agencies and engineers with an effective alternative to improve safety while reducing congestion.