Determining an Optimal Fleet Size for a Reliable Shared Automated Vehicle Ride-Sharing Service

Shared Automated Vehicles (SAVs) have the potential to revolutionize the urban transport landscape by reducing congestion, air pollution, and traffic accidents. However, the rejection rate for the travelers’ requests can jeopardize the potential adoption of SAVs as a new sustainable mode. The authors present MATSim simulations of SAVs service requests and rejections in the Tel-Aviv Metropolitan Area (TAMA) in Israel and demonstrate that fleets of 50-150K vehicles could well serve the entire intra-metropolitan travel demand, with an average occupancy of ~2 compared to 1.1 passengers per vehicle today. Minimal fleet size of 50K SAVs is sufficient for serving TAMA users’ activities but carries a high level of daily rejections 6%. An increase to 100K vehicles reduces the overall rejection rate to 1.66% with the rejection rate for trips between the TAMA core and outskirts remaining higher than 20%. A larger fleet size does not seem to improve the level of service significantly. The operational implications for optimal fleet size determination are further discussed.


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  • Accession Number: 01712679
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 24 2019 5:31PM