Foto del docente

Cristian Poliziani

Teaching tutor

Department of Civil, Chemical, Environmental, and Materials Engineering

Academic discipline: ICAR/05 Transportation


Keywords: GPS Traces - Sustainable mobility - Micro-simulation - Personal Rapid Transit - Transport planning

  • Analysis of GPS traces registered by smartphones in the city of Bologna

GPS points analysis of sustainable trips (bus, cycle, walk), registered by “Bella Mossa” program between April and September, jointed to 27 thousand of GPS traces (described by 8 million of GPS points), referred to cycling trips of the competition “European Cycling Challenge”, in May. The first operation is the join between GPS traces and the road network of Bologna. A second phase analyze statistically the trips in order to find some parameters (e.g. waiting time at the intersections, the presence of bike lanes, the slope etc…), to use in a new path choice model, which it will calibrated.

  • Cycling flow surveys

Different types of cycling flows survey (manual or instrumental), in some section of the Bologna road network, in order to determine the cycle trend from the year 2009. The join between the surveys and the GPS traces can estimate entirely the sustainable trips in the entire road network of Bologna.

  • SUMOPy development

A software assembled with the python language called SUMOPy (Joerg Schweizer, University of Bologna), have a graphical interface for the micro-simulator SUMO (DLR, Germany). SUMOPy make easier and efficient the usage of SUMO by providing the editing of the road network, loading the transport demand, characterizing the transport demand and evaluating/visualizing the results.

  • First detailed and large-scale micro-simulation

Micro-simulations are better than macro-simulations because of their accuracy in the results, despite of the difficult in estimating and representing data for the micro-simulation. In the literature is never been performed a detailed and large-scale micro-simulation, respectively because of the lack of a dis-aggregate demand and a powerful micro-simulator. SUMO micro-simulator can conduct a very detailed micro-simulation, considering the interactions between the users, which they move in the road network and between the users and the road network. SUMOPy development allows to doing a micro-simulation with a quite real dis-aggregate transport demand and a detailed road network. The generalization of the process allow to having a very powerful tool for cities and provinces for the evaluation of a transport system and then the interaction between the transport demand and supply. In particular, can be better evaluated the sustainable impact of a transport system (economic, social and environmental impact), in order to better evaluate the transport plan choice by transport stakeholders.

  • Impacts and optimization study of PRT technologies

Thanks to the large-scale and detailed micro-simulations, will be analyzed better the urban impact of a new transport system. In particular, we talk about PRT like the transport system that all would want. Actually, only some prototypes in small contest are operational, like in some airport or small circuit. PRT is not yet developed in the cities due to the lack of the capacity on demonstrating his efficiency about social, economic and environmental impact. With a large-scale and detailed micro-simulation, this will be possible. In particular, SUMOPy allow to implementing the PRT and all their technologies for his movements, control and interaction with the infrastructure and the other vehicles. Thanks to that, transport stakeholders will be able to evaluate the possibility to invest in the project or not, and researcher as well as designers will be able to simulate different strategies and technologies in order to find the best solution.

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