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首页> 美国政府科技报告 >Examination of Core Concepts in the Highway Capacity Manual Part 2: Freeway Traffic Lane Distribution
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Examination of Core Concepts in the Highway Capacity Manual Part 2: Freeway Traffic Lane Distribution

机译：公路容量手册核心概念的检验第2部分：高速公路交通车道分布

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An important consideration of transportation management is the distribution of lane use by vehicles. This distribution plays a significant role in how traffic management devices, such as variable message signs, lane control signals, and ramp meters, are used. Unfortunately, according to the Highway Capacity Manual (HCM), 'when two or more lanes are available for traffic in a single direction, the distribution in lane use varies widelythere are not 'typical' lane distributions.' An investigation of this concept using a large set of data from freeways in the urbanized Hampton Roads region of Virginia led to the following conclusions: The distribution of vehicles along a specific link of a freeway system does tend to follow predictable trends by time-of-day; and A missing data estimation procedure can be developed that exploits to the consistency of lane distribution by time-of-day and location. This estimation methodology proved to accurately estimate missing detector data, generally producing results within the 6%-8% error range. Finally, the report presents the following recommendations to VDOT: VDOT should collect and archive traffic data at the lane level to support future applications, such as the missing data estimation methodology; and VDOT should use the lane distribution-based missing data estimation methodology described in this report in Smart Traffic Centers and permanent count stations located on freeways.

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