Politecnico di Torino
Politecnico di Torino
Politecnico di Torino
Academic Year 2017/18
Models and technologies for traffic and transports
Master of science-level of the Bologna process in Mechanical Engineering - Torino
Teacher Status SSD Les Ex Lab Tut Years teaching
Deflorio Francesco Paolo ORARIO RICEVIMENTO A2 ICAR/05 39 12 0 0 12
SSD CFU Activities Area context
ICAR/05 6 D - A scelta dello studente A scelta dello studente
Subject fundamentals
The aim of the subject is to offer operational tools to support the development process of transport and infrastructures systems, from a functional point of view, providing theoretical basis for the application to real cases mathematical models for the observation, simulation and control of vehicle flows, also equipped with innovative technologies.

The main application context of the methods studied is the road transport system, with possible extensions to the rail or other transport modes. The methods also consider the available technologies for the positioning and automatic identification of vehicles, traffic and passenger monitoring systems, communication systems and on board devices for vehicles. The teaching therefore includes Intelligent Transport Systems (" ITS "), with reference to the integration and application of advanced technologies in transport systems.

The analysis scenarios is related to uninterrupted - for example, along motorways - and interrupted conditions - for example, by signalized intersections - in road networks.
Expected learning outcomes
Understanding of the methods for observation, simulation and control of road traffic with the support of emerging technologies.
Ability to identify a problem of traffic in transport infrastructure and solving it with a professional approach.
Ability to assess on the quality of traffic flow conditions on road sections or at intersections and to formulate appropriate solutions to project requirements.
Ability to use an appropriate mathematical model for the purposes of functional design and verification of the transport network elements, also in relation to safety issues.

This knowledge and skills are acquired through the applications of traffic simulation tool in laboratory and the analysis of case studies, useful to introduce the main methods available for traffic and transport engineers, in a system engineering approach.
Prerequisites / Assumed knowledge
Knowledge of the basic elements of mechanics and mathematical analysis. Basic understanding of probability, statistics and computer science is appreciated.
Methods for road traffic analysis (40h)

Methods for the analysis of traffic flows along road sections. Variables for traffic representation. Methods for the analysis of traffic flows at nodes. The quality of traffic at intersections and queuing systems, applied to various cases (signalized intersections, motorways, terminals). Methods for traffic simulation: the model for the road network and demand data. Scenarios, experiments, statistical observations. Methods for traffic observation and measurement. Time-space diagrams for the analysis of scheduled services. Techniques for controlled intersections in different scenarios. The model for the control systems in the traffic simulator. Analytical models for the representation of traffic flows.

Systems and technologies for transport and road safety (14h)

General concepts on the integration and application of ICT technologies to transport systems and related components. Basic concepts for the analysis of road safety and on advanced driving system assistance systems, based both on vehicle and infrastructure devices and communication systems.

Analysis of transport networks (6h)

Elements of the transport system and performance analysis tools. Supply models for transport networks. Graphs and cost functions for urban and suburban networks. Shortest path algorithms, with applications for navigation and fleet management.
Delivery modes
In addition to the lectures, numerical applications are proposed for road traffic analysis, also implemented in spreadsheets, examples of road traffic analysis on intersections and networks, using the microscopic simulator Aimsun.

During the lab activities, a team-work is developed concerning the analysis of traffic conditions at urban controlled intersections, performed using the traffic micro-simulator (Aimsun).
Texts, readings, handouts and other learning resources
The presentations used in the classroom are shared with students, whereas the numerical exercises are developed in laboratory with the use of traffic simulation software and spreadsheets.

The teaching material used during the course is regularly uploaded on the course website. Recommended textbooks to explore the topics:

1. Daganzo, Carlos. 1997. Fundamentals of transportation and traffic operations. Oxford: Pergamon.
2. Cascetta, Ennio. 2006. Modelli per i sistemi di trasporto. Teoria e applicazioni.
3. Olivari, Mario. 2009. Teoria e tecnica del deflusso veicolare. Aracne
4. Cantarella Giulio E. - Vitetta Antonino. 2010. La regolazione di intersezioni stradali semaforizzate. Metodi e applicazioni. Franco Angeli
5. Dalla Chiara Bruno (a cura di). 2013. ITS nei trasporti stradali. EGAF (ITA)

The various textbooks from the list will be cited by the teacher during the semester.
Assessment and grading criteria
The exam is an individual oral colloquium on the topics dealt with during the subject, integrated with some applications on the topics studied during the semester. These applications will be evaluated assigning a score, which will be weighted on the base of the hours devoted, approx. 10/30. The oral exam will be possible only if the students get a score greater or equal to 6/10 and will focus on the verification that knowledge and skills are properly acquired by the students, also in occasion of the applied works. The student knowledge will be ascertained by at least two questions on the contents, together with the evaluation of the applied works developed and delivered before the exam.

Programma definitivo per l'A.A.2017/18

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