Toyota Woven City: Hierarchical Integrated Traffic Management in a Fully Connected and Automated Environment

With the advancement of vehicular communication technologies and automated control systems, the number of connected and automated vehicles (CAVs) in urban networks is expected to grow rapidly in the near future. However, effectively managing a large number of vehicles simultaneously is a significant challenge to fully capitalize on the benefits of enhanced mobility and safety within a city. This paper showcases the implementation of a hierarchical integrated traffic management system in Toyota Woven City, a fully connected environment with 100% CAVs, to demonstrate its capacity for effectively managing a large number of vehicles. The system incorporates multi-layered vehicle control strategies, including dynamic routing, lane optimization, incident management, and proactive signal control, all aimed at enhancing mobility for all road users. Simulation results from Toyota Woven City reveal that by deploying the integrated system, vehicle delays can be reduced by up to 95% compared to the base case with no control, and by 90% compared to a general control strategy that only utilizes cooperative adaptive cruise control and dynamic routing strategies. Furthermore, the study highlights the system’s positive impact on pedestrian mobility across varying congestion levels and its reliability in managing road incidents.