A Review of Dedicated Lane Deployment for Connected and Automated Vehicles

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Abstract
Connected and automated vehicles (CAVs) indicate the future of human transportation. There will be a mix of conventional vehicles and CAVs sharing the roads for an extended period before CAVs completely replace all human-driven vehicles (HDVs). It is crucial to investigate how to optimize traffic efficiency across the entire network during this transitional phase. Introducing dedicated lanes (DLs) can be an effective approach. This study aims to provide a comprehensive review of existing studies on the deployment of dedicated CAV lanes. An analysis of the literature shows that there are three main groups of studies related to DLs for CAVs: one group focuses on the deployment of dedicated CAV lanes, the second explores the control policies for DLs for CAVs, and the third examines the impacts of implementing dedicated CAV lanes. The main findings of the analysis indicate that the deployment of DLs for CAVs can enhance traffic performance within a certain range of market penetration rates (MPRs), but this range varies slightly across different studies. It is also found that the MPR of CAVs plays a significant role in the deployment of DLs. It is not recommended to deploy DLs for CAVs if the MPRs are either too low or too high. In addition, the deployment plan of dedicated CAV lanes typically considers the influencing factors such as system cost, safety, environmental factors, and total travel time. This review provides an in-depth examination of DL deployment methodologies, evaluates their impact on traffic systems, and identifies key areas for future research.
Funding Information
  • Fundamental Research Funds for the Central Universities (300102342203)
  • National Natural Science Foundation of China (51308335)
  • Natural Science Foundation of Shaanxi Province (2019JM-228)
  • 111 Project of Sustainable Development of Transportation in Western and Urban Agglomeration (B20035)

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