Strategic Assessment of Lisbon’s Accessibility and Mobility Problems from an Equity Perspective

Garcia, Camila; Macário, Rosário; Menezes, Ezequiel Dantas de Araújo Girão; Loureiro, Carlos Felipe Grangeiro

doi:10.1007/s11067-018-9391-4

Cited by 20 publications

(22 citation statements)

References 42 publications

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“…Conforme mencionado anteriormente, esse novo paradigma remete a problemas de acessibilidade e a medidas de impedância entre as atividades e as pessoas que querem acessá-las, mas quais são os tipos de problemas que normalmente se pretende compreender com o auxıĺio da modelagem? A priori é útil assumir uma re-presentação geral da problemática da mobilidade e acessibilidade, como a de Garcia et al (2018) apresentada na Figura 1, pois possibilita uma proposta de indicadores de acessibilidade que possam ser utilizados em diversas situações. A proposta dos autores é que as caracterıśticas dos indivıduos ou grupos sociais podem ser causa da distribuição inadequada do uso do solo, de ine iciências na oferta de transporte, ou ainda de problemas de mobilidade.…”

Section: Representação Da Problemáticaunclassified

Proposta de construção de indicador de caracterização da acessibilidade na região metropolitana de Fortaleza

Souza

Loureiro

2018

TRANSPORTES

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A compreensão da problemática é essencial na construção de soluções adequadas aos problemas de mobilidade e acessibilidade urbanas. Assim, indicadores que possam caracterizar e diagnosticar estes problemas devem ser melhor investigados. Este trabalho propõe um indicador de caracterização da acessibilidade com base no logsum, comumente utilizado como medida do excedente do consumidor, apresentando características que favorecem seu uso como medida de desempenho do sistema de transportes. Para propor o indicador, utiliza-se como referência uma representação geral da problemática da mobilidade e acessibilidade e uma tipologia de problemas baseada nos princípios da equidade e sustentabilidade, verificando sua aplicabilidade na Região Metropolitana de Fortaleza. Conclui-se que o método proposto permite a estimativa de indicadores adequados para analisar problemas de acessibilidade desde que no cálculo do logsum ponderado, bem como na definição e calibração das funções utilidade, sejam consideradas as especificidades de cada tipo de problema que se pretende caracterizar e diagnosticar.

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Section: Representação Da Problemáticaunclassified

Proposta de construção de indicador de caracterização da acessibilidade na região metropolitana de Fortaleza

Souza

Loureiro

2018

TRANSPORTES

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“…Accessibility can be defined as the opportunity to reach urban functions by different means as a result of the interaction between spatial structure (land-use) and transport systems [20,21]. Even though the notion of accessibility is consolidated in urban and transport planning, few researchers have address freight accessibility [6,22], despite its potential contributions to urban freight transport planning.…”

Section: Introductionmentioning

confidence: 99%

Accessibility to Food Retailers: The Case of Belo Horizonte, Brazil

Garcia¹,

Oliveira²,

Pinto³

2020

Preprint

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Access to food systems is essential to sustain urban life. In this paper, we discuss the differences concerning accessibility levels to food systems among potential consumers in Belo Horizonte, Brazil. The goal was to characterize spatial mismatches regarding food opportunities and identify suitable areas for sustainable food mile solutions, such as non-motorized home delivery and purchase trips. For this, we have spatially related: (i) the population concentration; (ii) the income of households; and (iii) accessibility measures considering both the spatial structure of food retailers and the distance between households and stores, considering the food mile. We have then used spatial statistics and spatial analysis methods to determine the spatial pattern of variables and the cumulative opportunity measure for households. There is great spatial differentiation regarding the accessibility levels of food retailers and the results can be considered to support the development of policy and land use regulation that can stimulate non-motorized and collaborative delivery as an effective last-mile solution.

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“…A expansão dos centros urbanos aliada a uma falta/eficiência de planejamento urbano ocasiona sérios prejuízos à sociedade. Inadequações no uso do solo e ineficiências na oferta de transporte levam a problemas de acesso à oportunidades para os habitantes dos centros urbanos (GARCIA et al, 2018), especialmente para aqueles cativos do transporte público.…”

Section: Sumário 1 Introduçãounclassified

Big Data de Transporte Público na Análise da Variabilidade de Indicadores da Acessibilidade às Oportunidades de Trabalho e Educação

Braga¹

2019

Preprint

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Accessibility, defined as the potential of opportunities for interaction, is a key concept in urban planning. Traditionally, the measurement of accessibility relied on methods that used simplified information on transit networks. Recent developments of public transport structured data through Global Transit Feed Specification (GTFS) fostered the creation and standardization of many tools to estimate travel times between origin-destination pairs, feeding the calculation of accessibility indicators. However, researchers are beginning to better understand to what extent differences between scheduled GTFS data and real services can affect accessibility estimates. The aim ofthis dissertation is to analyze the variability of accessibility indicators by public transport to work and education opportunities using location data and smart card data in a large transportation system. This variability of accessibility is investigated through three main hypotheses: 1) there is a difference between measuring it with Scheduled GTFS versus Empiric GTFS; 2) there is a difference between measuring it with Empiric GTFS based on median observed travel times versus based on a dispersion measure of observed travel times on the network; 3) there is a difference between measuring it to different departure times within peak hour. Initially, the proposed method consolidates and integrates one month of big data database, preparing them to the GTFS reconstruction approach. Using geoprocessing techniques, it starts by transforming raw GPS points to a structured transit timetable. The timetable times are then aggregated by 15 minutes intervals and segments between stops, determining the median and 85 percentile travel time to produce two empiric GTFS files. These files, alongside the Scheduled GTFS, are then used to estimate travel time between origin-destination pairs, making possible to estimate accessibility indicators based on scheduled and real-time data at different departure times within peak hour. Smart card data is used to estimate time thresholds to calculate cumulative indicators. The results corroborate the three hypotheses of variability on the spatial distribution of accessibility indicator by work and education activities. This variability is higher for access to jobs opportunities given its strong concentration on the central area of Fortaleza. These results suggest that decision makers take this variability into consideration when they assess the accessibility impacts of future interventions.

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Strategic Assessment of Lisbon’s Accessibility and Mobility Problems from an Equity Perspective

Cited by 20 publications

References 42 publications

Proposta de construção de indicador de caracterização da acessibilidade na região metropolitana de Fortaleza

Proposta de construção de indicador de caracterização da acessibilidade na região metropolitana de Fortaleza

Accessibility to Food Retailers: The Case of Belo Horizonte, Brazil

Big Data de Transporte Público na Análise da Variabilidade de Indicadores da Acessibilidade às Oportunidades de Trabalho e Educação

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