Lane Management with Variable Lane Width and Model Calibration for Connected Automated Vehicles
Publication: Journal of Transportation Engineering, Part A: Systems
Volume 146, Issue 3
Abstract
Connected autonomous vehicles (CAVs) may be able to operate with less longitudinal and lateral spacing than traditional human-driven vehicles (HVs) due to fast and precise control technologies and cooperative maneuvers. With this appealing feature, it is possible to allocate specific narrower highway lanes to CAVs to increase traffic throughput. This paper proposes an analytical lane management framework that determines the optimal number of CAV lanes needed for a highway segment to maximize its throughput considering the narrowed width of CAV lanes. The proposed optimization model investigates three types of vehicles, including CAVs and human-driven light-duty and human-driven heavy-duty vehicles. It takes into account varying mixed-traffic demand levels, CAV market penetration rates, platooning intensities, and CAV technology scenarios. The results from the numerical experiments reveal that the proposed lane management framework with the narrowed CAV lane width increases highway throughput for various parameter settings in different CAV technology scenarios. In order to bring the developed lane management model to the implementation stage, this paper proposes an analytical methodology on how to estimate model parameters (e.g., CAV market penetration rate, platooning intensity, and average headway) with mixed-traffic trajectories when they become available in the near future. We illustrate the application of the developed calibration method with synthetic mixed-traffic data adapted from a data set.
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Acknowledgments
This research is supported by the National Science Foundation CMMI #1558887.
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Published In
Journal of Transportation Engineering, Part A: Systems
Volume 146 • Issue 3 • March 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Nov 8, 2018
Accepted: Apr 24, 2019
Published online: Dec 19, 2019
Published in print: Mar 1, 2020
Discussion open until: May 19, 2020
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