Abstract: A bottleneck is a road segment whose traffic capacity is lower than that of its vicinity. Since traffic congestion occurs when an arrival traffic flow rate to the bottleneck exceeds its capacity, understanding, and description of bottleneck behaviors are essential for establishing congestion mitigation strategies. This article contains discussions on various types of freeway bottlenecks, such as sag/tunnel, merge, diverge, and weaves. Specifically, the bottleneck activation mechanisms are discussed for each type, mainly from a macroscopic perspective. Furthermore, the current practice of traffic congestion management and possible advancing of it in the era of connected and automated vehicles are discussed.
Publication Year: 2021
Publication Date: 2021-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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