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Development of an appropriate model for the optional lane-changing rate in weaving segments with short lengths
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Development of an appropriate model for the optional lane-changing rate in weaving segments with short lengths
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Journal Article
Development of an appropriate model for the optional lane-changing rate in weaving segments with short lengths
2024
Overview
To compute the level of service and density in weaving segments, the Highway Capacity Manual (HCM) defined for the first time in 2010 a relationship based on a lane change rate to assess the density of the weaving segment. It is critical to accurately estimate the lane-changing rates in these situations, but field observations in weaving segments shorter than 250 meters in Tehran, Iran revealed a significant difference between the HCM2022 model estimate and field data. The traffic and geometric data collected at 87 (15-minute) intervals from six weaving segments in Tehran were used to develop models for estimating lane-changing rates in weaving segments. These 87 intervals were then divided into 69 (terrain data) for equations and 18 (test data) for model comparisons. Weaving volume and weaving segment area are introduced as two independent variables in the optional lane-changing rate model of weaving vehicles in this study, with R =0.74. Furthermore, for a lane-changing model of non-weaving vehicles with R =0.95, two new variables of non-weaving volume and traffic solidity were defined. Finally, based on the 18 intervals used to test the results, it showed the improvement of the developed models' results compared to HCM2022 models.
Publisher
Sharif University of Technology
Subject
