Unlocking potential capacity benefits of electric vehicles (EVs) with adaptive cruise control (ACC)

Today's mainstream vehicles are partially automated via Adaptive Cruise Control (ACC) that relies on on-board sensors to automatically adjust speed to maintain a safe following distance. Contrary to expectations for automated vehicles, ACC may reduce capacity at bottlenecks because its delayed...

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Bibliographic Details
Published in:Transportmetrica. (Abingdon, Oxfordshire, UK) Oxfordshire, UK), 2023-12, Vol.11 (1), p.1894-1911
Main Authors: Lapardhaja, Servet, Yagantekin, Kemal Ulas, Yang, Mingyuan, Majumder, Tasnim Anika, Kan, Xingan (David), Badhrudeen, Mohamed
Format: Article
Language:English
Subjects:
Acceleration
Adaptive control
Adaptive Cruise Control (ACC)
capacity
Cruise control
Discharge
Electric Vehicle (EV)
Electric vehicles
field test
Headways
Powertrain
Queues
Steady state
vehicle automation
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Summary:Today's mainstream vehicles are partially automated via Adaptive Cruise Control (ACC) that relies on on-board sensors to automatically adjust speed to maintain a safe following distance. Contrary to expectations for automated vehicles, ACC may reduce capacity at bottlenecks because its delayed response and limited initial acceleration during queue discharge could increase the average headway. Fortunately, EV's unique powertrain characteristics such as instantaneous torque and regenerative braking could allow ACC to adopt shorter headways and accelerate more swiftly to maintain shorter headways during queue discharge, therefore reverse the negative impact on capacity. This has been verified in a series of field experiments, which demonstrate that EVs with ACC could potentially achieve a capacity as high as 2,931 veh/hr/lane in steady-state conditions, and it can be sustained in non-steady-state conditions where speeds fluctuate and queues form.
ISSN:2168-0566
2168-0582
DOI:10.1080/21680566.2023.2271668