Modeling transport transfer hubs on the basis of multiphase and BMAP-flow mass transit systems
An outstanding, incl. in view of «green» technologies implementation, task for the modern city logistics is reviewed: the problem of creating transport transfer hubs (TTH) intended to redirect passenger flow from personal auto transport to public. The authors have researched local and foreign experience of such systems, which allows postulating that use of TTHs is one of the promising ways of decreasing loads on the transport systems of a megapolis. An original approach to TTH operation modeling is proposed, based on the three-phase system of mass service with finite queues, group service at some phases and incoming BMAP-flow. The last is characterized by group incoming requests, with the group size random and intensity of requests changing with time. This approach allows improving the precision and adequateness of modeling compared to Markoff-based systems of mass transit. The authors presented results of analytic studies of multiphase systems as recurrent formulas and numeric method of computing stationary probabilities of states fro such systems. On the basis of the proposed mathematic model an imitation model has been created and implemented in software, allowing to run multi-variate scenario calculations. A computational experiment including solving model and test examples was carried out.