Una metodologia per la simulazione dell'assegnazione in sistemi di trasporto pubblico: applicazione ad un caso reale

For representing transit system two approaches can be used: line approach where all runs belonging to the same line are simulated in a single infrastructure line; run approach where the single runs are explicitly simulated. Assignment models simulate how origin-destination demand flows affect link flows and resulting performances. Traffic assignment models in transit system are generally made up by two different approaches: with optimal strategy approach for high frequency system or strategic level and considering line approach for supply; with schedule-based strategy approach for low frequency system or operative and tactical level and considering run approach for supply. In this paper the schedule-based strategy approach for low frequency system and the optimal-strategy approach are applied and compared in the extra-urban supply system of Reggio Calabria department. In the department there are about 576000 inhabitants and the supply has 1363 runs a day. The results obtained are discussed and are used for evaluate services integration and costs and revenues. This paper is developed into the project PRIN “Linee guida per la programmazione dei servizi di trasporto pubblico locale” (prot. min. MM08471228) and continues a work presented at European Transport Conference 2002 in Cambridge.