复杂连续流交叉口行人和自行车处理方法研究
Assessing Pedestrian and Bicycle Treatments at Complex Continuous Flow Intersections
摘要:
本研究评估了连续流交叉口(CFI)的自行车交叉替代方案的性能。此外,还对CFI交叉口类型与旨在提供等效容积容量比的标准交叉口进行了比较。测试了三种CFI交叉点,即传统交叉点、偏移交叉点和中间块交叉点。总共有12种替代方案,通过将两种自行车道类型和两种右转控制类型。通过微观模拟的基础上停止延迟和停止的次数,这些方案进行了分析。模拟结果显示,对于所有用户类别(包括机动交通)来说,偏移交叉口替代方案造成的停车延误最少。对于大多数路线类型,传统交叉口产生的停靠站数量最少。根据交叉点处特定的起点-终点模式,可以将“中间街区”交叉点视为“偏移”交叉点或“传统”交叉点的补充。在大多数情况下,专用自行车道的表现优于共用车道。当与一个等效的标准交叉口相比,汇总结果显示,所有CFI交叉口类型的停车延误显着改善,但标准交叉口有一个相等或更少的停车次数为大多数路线的调查。在对车流量的影响方面,偏置交叉口的车流量与通行能力之比最低。未来的研究包括将自行车的安全性,舒适性,以及这些交叉替代品的相对影响,额外的车辆性能指标。
英文摘要:
This study evaluated the performance of pedestrian-bicycle crossing alternatives at Continuous Flow Intersections (CFI). Further, a comparison was also performed of CFI crossing types against a standard intersection designed to provide an equivalent volume-to-capacity ratio. Three CFI crossing alternatives were tested, namely Traditional, Offset, and Midblock crossings. In total, 12 alternative scenarios were generated by incorporating two bicycle path types and two right-turn control types. These scenarios were analyzed through microsimulation on the basis of stopped delay and number of stops. Simulation results revealed that the Offset crossing alternative incurred the least stopped delay for all user classes, including motorized traffic. The Traditional crossing generated the least number of stops for most route types. The Midblock crossing can be considered as a supplement to either the Offset or Traditional crossing depending on the specific origin-destination patterns at the intersection. The exclusive bicycle path performed better than the shared-use path in most cases. When compared with an equivalent standard intersection, aggregated results showed significant improvement for all CFI crossing types with respect to stopped delay, but the standard intersection had an equal or fewer number of stops for most routes investigated. Regarding the effect on vehicular movement, the lowest volume-to-capacity ratio of the main intersection was incurred by the Offset crossing. Future research includes incorporating pedestrian-bicycle safety, comfort, and the relative effects of these crossing alternatives on additional vehicular performance measures.
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