Simulation of the environmental efficiency of the rome intermodal UDS designed for the next jubilee

摘要

For the demand-intensive occasion of the Jubilee of the year 2000, a new Urban Transport System (UTS) has been designed for Rome, based on several modal interchange nodes (car-train, bus-train) radially located along city belt, and on a selective pricing policy for the downtown penetration by private car. The objective is to improve the mobility-environmental efficiency in the central areas. Several possible configurations for the new intermodal UTS have been evaluated by use of case-specific models, innovative simulation methodologies and related sw tools. These models allow in particular an explicit characterisation of the inter-multi-modal network and are based on comprehensive cost-functions, encompassing perceived costs as a function of traveller category, pricing, and other cost factors. The paper focalizes on the simulation environment developed and used in order to characterise the aforementioned parameters. In particular, the MTCP system (Macroscale Transoport Chain Planning) and the MIAURB system (Macroscale Integrated Analysis of Urban mobility-environmental Balance) are described. These system have been both applied to the intermodal network model to evaluate, in sequence: a) the modal spit due to the intermodal supply, b) the detailed transport times of the network links; c) the multimodal traffic volumes; d) the environmental "zonal" efficiency parameters, in terms of : space occupancy, time-space usage, pollutant emissions, social cost of mobility, etc. A discussion on the results obtained and performance of the simulation method is finally presented.