scholarly journals A percepção do especialista sobre o tema mobilidade urbana

TRANSPORTES ◽  
2008 ◽  
Vol 16 (1) ◽  
Author(s):  
Renata Cardoso Magagnin ◽  
Antônio Nélson Rodrigues da Silva
Keyword(s):  
Transportation Planning ◽  
Significant Part ◽  
Urban Mobility ◽  
Computational Tool ◽  
Before And After ◽  
Partial View ◽  
Qualitative Analyses

<p>O conceito de mobilidade urbana ainda é muito recente no Brasil e os problemas a ele relacionados ainda não estão muito claros para uma parcela significativa da população. Este artigo tem como objetivo identificar se isto também se verifica com técnicos e planejadores trabalhando especificamente nos campos do planejamento urbano e de transportes. O estudo foi realizado em uma cidade média brasileira, com uma ferramenta computacional concebida para ajudar na definição de um Sistema de Indicadores de Mobilidade Urbana. Neste estudo de caso foram utilizadas técnicas de avaliação qualitativa que permitiram confrontar a percepção dos usuários acerca do conceito de mobilidade urbana antes e depois do uso da ferramenta. A abordagem permitiu demonstrar que de fato havia inicialmente uma visão parcial da mobilidade por parte dos técnicos. Também conduziu à conclusão de que parece ter havido uma significativa ampliação no seu grau de conhecimento sobre o tema ao longo do processo.</p><p><em><strong>Abstract</strong> The concept of urban mobility is still recent in Brazil. As a consequence, the problems related to the concept are not clear for a significant part of the population. The objective of this study is to examine if this is also the case for technicians and planners working specifically in the fields of urban and transportation planning. The study was carried out in a Brazilian medium-sized city, through an application with a computational tool originally designed to help in the construction of a System of Urban Mobility Indica- tors. Qualitative analyses tools were applied for comparing the participants’ perception about the urban mobility concept before and after the used of the tool. The approach was able to reveal that the professionals had indeed a partial view of mobility at the beginning of the research. It also led to the conclusion that their knowledge about the theme evolved significantly during the process. </em></p>

scholarly journals Modalflow: Cross-Origin Flow Data Visualization for Urban Mobility

Algorithms ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 298
Author(s):  
Ignacio Pérez-Messina ◽  
Eduardo Graells-Garrido ◽  
María Jesús Lobo ◽  
Christophe Hurter
Keyword(s):  
Survey Data ◽  
Visual Analysis ◽  
Ground Truth ◽  
Secondary Source ◽  
Urban Mobility ◽  
Flow Maps ◽  
Partial View ◽  
Visualization Techniques ◽  
Unsupervised Algorithms ◽  
Source Of Information

Pervasive data have become a key source of information for mobility and transportation analyses. However, as a secondary source, it has a different methodological origin than travel survey data, usually relying on unsupervised algorithms, and so it requires to be assessed as a dataset. This assessment is challenging, because, in general, there is not a benchmark dataset or a ground truth scenario available, as travel surveys only represent a partial view of the phenomenon and suffer from their own biases. For this critical task, which involves urban planners and data scientists, we study the design space of the visualization of cross-origin, multivariate flow datasets. For this purpose, we introduce the Modalflow system, which incorporates and adapts different visualization techniques in a notebook-like setting, presenting novel visual encodings and interactions for flows with modal partition into scatterplots, flow maps, origin-destination matrices, and ternary plots. Using this system, we extract general insights on visual analysis of pervasive and survey data for urban mobility and assess a mobile phone network dataset for one metropolitan area.

scholarly journals Refugees Welcome? Online Hate Speech and Sentiments in Twitter in Spain during the Reception of the Boat Aquarius

2021 ◽  
Vol 13 (5) ◽  
pp. 2728
Author(s):  
Carlos Arcila-Calderón ◽  
David Blanco-Herrero ◽  
Maximiliano Frías-Vázquez ◽  
Francisco Seoane
Keyword(s):  
Computational Methods ◽  
Asylum Seekers ◽  
Hate Speech ◽  
Significant Part ◽  
High Profile ◽  
Before And After ◽  
Positive Sentiment ◽  
Stigmatized Groups ◽  
The Eu

High-profile events can trigger expressions of hate speech online, which in turn modifies attitudes and offline behavior towards stigmatized groups. This paper addresses the first path of this process using manual and computational methods to analyze the stream of Twitter messages in Spanish around the boat Aquarius (n = 24,254) before and after the announcement of the Spanish government to welcome the boat in June 2018, a milestone for asylum seekers acceptance in the EU and an event that was highly covered by media. It was observed that most of the messages were related to a few topics and had a generally positive sentiment, although a significant part of messages expressed rejection or hate—often supported by stereotypes and lies—towards refugees and migrants and towards politicians. These expressions grew after the announcement of hosting the boat, although the general sentiment of the messages became more positive. We discuss the theoretical, practical, and methodological implications of the study, and acknowledge limitations referred to the examined timeframe and to the preliminary condition of the conclusions.

scholarly journals Transformation of urban mobility during COVID-19 pandemic – Lessons for transportation planning

2021 ◽  
Vol 23 ◽  
pp. 101257
Author(s):  
Syed Masiur Rahman ◽  
Nedal Ratrout ◽  
Khaled Assi ◽  
Ibrahim Al-Sghan ◽  
Uneb Gazder ◽  
...  
Keyword(s):  
Transportation Planning ◽  
Urban Mobility

Pedestrian Safety Through a Raised Median and Redesigned Intersections

2003 ◽  
Vol 1828 (1) ◽  
pp. 56-66 ◽  
Author(s):  
Michael R. King ◽  
Jon A. Carnegie ◽  
Reid Ewing
Keyword(s):  
Driver Behavior ◽  
Indirect Costs ◽  
Analysis Tool ◽  
Vehicle Speed ◽  
Digital Cameras ◽  
Pedestrian Tracking ◽  
Exposure Risk ◽  
Direct And Indirect Costs ◽  
Before And After ◽  
Qualitative Analyses

Documentation was done on the effect of a raised median, signalized and redesigned intersections, curbs, and sidewalks on vehicle speed, pedestrian exposure risk, driver predictability, and vehicle volume along a four-lane suburban roadway in central New Jersey. The analysis used both quantitative tools (speed and volume counts, timing runs) and qualitative methods (pedestrian tracking, video, before-and-after photography). The results are that the 85th-percentile vehicle speed fell by 2 mi/h and pedestrian exposure risk decreased by 28%. Also, the median allows pedestrians to cross one direction of traffic at a time and signals, curbs, median, redesigned intersections, and striping patterns work together to manage driver behavior. In regard to vehicles, it was found that vehicle volumes were not affected and that vehicle speeds acted independently of vehicle volumes. A collision analysis projected a savings of $1.7 million over the next 3 years in direct and indirect costs. The goal of the report was to produce a simple and straightforward analysis tool for similar projects in the area. Some of the benefits of roadway projects such as these can be quantified numerically, whereas others rely on qualitative analyses. For example, before-and-after speeds are easily gathered and compared, whereas before-and-after pedestrian behavior at the raised median requires a more in-depth approach made easier by digital cameras. Together, before-and-after data and before-and-after imaging present a more holistic picture of the benefits and limitations of a project.

scholarly journals Moving to Private-Car-Restricted and Mobility-Served Neighborhoods: The Unspectacular Workings of a Progressive Mobility Plan

2019 ◽  
Vol 11 (22) ◽  
pp. 6208 ◽  
Author(s):  
Fredrik Johansson ◽  
Greger Henriksson ◽  
Pelle Envall
Keyword(s):  
Car Ownership ◽  
Urban Mobility ◽  
Travel Patterns ◽  
Vehicle Ownership ◽  
Life Conditions ◽  
Before And After ◽  
Bike Sharing ◽  
Private Car ◽  
Car Travel ◽  
Over Time

Despite ongoing changes in housing construction around parking requirements, few studies have been undertaken on travel practice and vehicle ownership once homes have been built in line with new requirements and occupied. This study focused on the experience and travel practices of residents in two specific cases involving new requirements in Sweden. It was based on interviews and questionnaires with residents before and after they moved into the two new blocks of apartments. A relatively restricted supply of parking was compensated for with subsidized mobility services for the residents, e.g., car and bike (sharing) clubs. The results indicated a decrease in car ownership in both blocks, as well as a decrease in the frequency of car travel in one of them. There were indications that use of public transport had increased. Our analysis illustrates the roles that parking and mobility services played over time in establishing the residents’ travel habits. The process that shaped the new residents’ car ownership and travel patterns was, in part, quite slow and unspectacular compared with the intentions and expectations of the stakeholders involved as regards to how car ownership and travel habits would change. We discuss a spectrum of everyday life conditions, which together with parking requirements and mobility services can stimulate the growth of urban mobility practices other than those based on private car ownership.

The Rio's transport legacy: pre- and post-Games resident perceptions

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tiago Ribeiro ◽  
Victor Almeida
Keyword(s):  
Factor Analysis ◽  
Public Transport ◽  
Public Transportation ◽  
Five Factor Model ◽  
Transport Systems ◽  
Urban Mobility ◽  
Content Type ◽  
The Public ◽  
Resident Perceptions ◽  
Before And After

PurposeThe Rio 2016 Olympic Games required a significant investment in the public transport systems, connecting four city's areas and providing different types of impacts and legacies for their hosts. The purpose of this paper is to examine resident perceptions of the public transportation issues in the Rio host city before and after the Games. Key factors underpinning transportation issue outcomes are identified.Design/methodology/approachData were collected among Rio local residents by using a pre-Games (n = 504) and post-Games design (n = 421). The cross-sectional and longitudinal data were assessed at both time periods. An exploratory factor analysis revealed five factors, and a confirmatory factor analysis analysed the psychometric properties of the constructs proposed. Subsequently, MANOVA and a series of ANOVA tests (one-way and paired samples) were performed to analyse the differences in perceptions before and after the Games.FindingsResults revealed a five-factor model of public transportation issues perceived: planning, infrastructure, insecurity, information and urban mobility. Resident perceptions for four factors (planning, infrastructure, insecurity, urban mobility) increased from pre- to post-Games, meaning that they have a more negative perspective about those issues. In contrast, the findings suggested an improvement in public transport information perceived between the period before and after the Games.Originality/valueThis study contributes to the academic literature related to discussing the Olympic legacy by providing evidence of how hosting the Olympics may lead to social exchange with negative outcomes on transport legacy. The findings of this study can be used as valuable information for future event organizers, local authorities and governments.

E-Scooter Systems

2021 ◽  
pp. 36-67
Author(s):  
Betül Ertoy Sariişik ◽  
Ozge Yalciner Ercoskun
Keyword(s):  
Climate Change ◽  
Traffic Congestion ◽  
Transportation Planning ◽  
City Planning ◽  
Global Scale ◽  
Urban Mobility ◽  
Transport Mode ◽  
Expert Opinions ◽  
Fossil Fuel Consumption ◽  
Sustainable Urban Mobility

Transportation planning, as one of the essential parts of city planning, has the potential to solve many problems on a global scale. These problems can be listed as traffic congestion, air pollution, fossil-fuel consumption, accessibility problems, global warming, climate change, and psychological problems affecting human lives. In recent years, transportation planning studies have come to the fore within the concept of sustainable urban mobility. The focus of this research is e-scooter systems, one of the micromobility options within the scope of urban mobility. The study explores how the availability of this micro transport mode can affect the time, cost, and ease of travels. In order to get information about the applications in Turkey, provider representatives were interviewed, and mobile applications and expert opinions were consulted.

scholarly journals Transportation Planning for Automated Vehicles—Or Automated Vehicles for Transportation Planning?

2019 ◽  
Vol 20 (2) ◽  
pp. 189-205 ◽  
Author(s):  
Shane Epting ◽  
Keyword(s):  
Transportation Planning ◽  
Transportation Systems ◽  
Urban Mobility ◽  
Perceived Benefits ◽  
Automated Vehicles ◽  
Human Flourishing ◽  
Urban Settings ◽  
Ethical Decisions ◽  
The Many

In recent years, philosophical examinations of automated vehicles have progressed far beyond initial concerns over the ethical decisions that pertain to programming in the event of a crash. In turn, this paper moves in that direction, focusing on the motivations behind efforts to implement driverless vehicles into urban settings. The author argues that the many perceived benefits of these technologies yield a received view of automated vehicles. This position holds that driverless vehicles can solve most if not all urban mobility issues. However, the problem with such an outlook is that it lends itself to transportation planning for automated vehicles, rather than using them as part of planning efforts that could serve urban mobility. Due to this condition, present efforts aimed at improving transportation systems should resist dogmatic thinking. Instead, they should focus on goals that keep topics such a human flourishing, sustainability, and transportation justice firmly in view.

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