ROAD INFRASTRUCTURES IN THE URBAN AND METROPOLITAN AREAS

Convey knowledge of design measures and traffic management strategies aimed at achieving the typical objectives of urban transport planning tools: 1) safety for the different categories of users (pedestrians, cyclists, vehicle users); 2) reduction of pollution (air pollution and noise); 3) rational organization of parking; 4) efficiency of public transport systems.

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The course includes classroom lectures and works conducted in groups of 2 students (with the exception of the limitations imposed by the COVID -19 emergency).

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The work consists of analysing an existing urban area and transforming it through design measures and strategies aimed at achieving one or more specific objectives that will be determined during the course (for example: Transforming an urban area by removing architectural barriers; creating protected routes to school; strategies to improve safety; etc.).

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Students who, after presenting the appropriate documentation (DR n.1598 of 2/5/2018), have obtained recognition as a working student, sports student, student in difficulty and student with disabilities, if it is not possible for them to carry out the work in a group with other students of the course, will carry out a personalized work, the modalities of which will be agreed with the teacher.

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There are no prerequisites. However, it is strongly recommended to have taken the exam of "Road Infrastructure Project" or at least to have acquired the frequencies.

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Class participation is strongly encouraged as this is consistent with the proposed educational model, which is designed to encourage gradual learning, active student participation in the classroom, and dialogue between teachers and students. Since the group works will take place in the classroom, attendance is strongly recommended.

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The didactic material is represented by the reference texts already provided. Additional material required for the teaching activity will be made available on the website: www.stradelandia.it

1. PLANNING TOOLS AND STRATEGIES FOR ROAD SAFETY IN URBAN AND METROPOLITAN AREAS

Sustainable Urban Mobility Plans (PUMS) and Urban Traffic Plans (PUT). Urban Road Safety Plan. Safety in urban areas and traffic calming measures: localized measures, along axis and coordinated.

2. MEASURES FOR THE SAFETY OF PEDESTRIAN ROUTES

Pedestrian Crossings. Raised pedestrian crosswalks. Sidewalks. Expansion of sidewalks. Protected pathways between homeand school and between homeand play. Pathways without architectural barriers.

3. MEASURES FOR THE SAFETY OF BIKE ROUTES

Crossings for bicyclists. Safe routes for bicyclists.

4. TRAFFIC CALMING MEASURES

Speed bumps and speed cushions. Raise sidewalk in intersection areas. Side narrowing and with median island. Chicanes. Gateway treatments. Visual and audible ribbons. Visual narrowing of the roadway. Colour changes and other surface treatments. Traffic signals with speed measurement systems. Electronic speed bollards. Permanently installed speed measurement systems.

5. EXTENDED INTERVENTIONS TO IMPROVING SAFETY THE OF USERS IN NEIGHBORHOOD

Residential streets. Zone 30. Environmental islands.

6. ACCIDENT ANALYSIS

Safety and accidents. Accidents data. Aggregate analysis: CNR method for checking safety conditions; Accident maps; Accident frequency; Accident rate; Equivalent Damage Index (FDI); Relative Severity Index (ISR); Empirical Bayesian method; Regression method; Statistical models for predictive analysis of accidents; Combined criteria. The disaggregated analysis: types of road accidents; collision diagrams; analysis of accident scenarios; CNR methodology. Examples of application of accident analysis methods. The study of the accident phenomenon: a necessary tool for road management authorities.

7. PARKING INFRASTRUCTURES

The parking in urban contexts. Functional classification of parking spaces. Regulatory framework for parking. Parking demand assessment: criteria for quantifying parking demand. Design parameters of parking infrastructures: ground level parking; disabled parking; underground and overground parking; automated mechanical parking.

8. INFRASTRUCTURE AND PUBLIC TRANSPORT SYSTEMS

The role of public transport in urban areas. Quality of public transport infrastructures and systems. Infrastructures and collective public transport systems: Buses, trolleybuses, trams, metropolitan railways. Individual public transport systems: car sharing; carpooling; call-sharing taxis and buses.

1. N. Distefano, S. Leonardi. “Infrastrutture Viarie nelle Aree Urbane e Metropolitane - A.A. 2021/2022”. Dispensa in formato PDF.

2. S. Canale, N. Distefano, S. Leonardi. “PROGETTARE LA SICUREZZA STRADALE. Criteri e verifiche di sicurezza per la progettazione e l’adeguamento degli elementi delle infrastrutture viarie: intersezioni, tronchi, sovrastrutture, gallerie, opere idrauliche, barriere di sicurezza, illuminazione, segnaletica ed interventi di traffic calming”. EPC Libri Roma – Maggio 2009.

3. European Commission: GUIDELINES FOR DEVELOPING AND IMPLEMENTING A SUSTAINABLE URBAN MOBILITY PLAN – Second Edition 2019.

4. Ministero delle Infrastrutture e dei Trasporti - DECRETO 4 agosto 2017 “Individuazione delle linee guida per i piani urbani di mobilità sostenibile, ai sensi dell’articolo 3, comma 7, del decreto legislativo 16 dicembre 2016, n. 257”.