Measuring transit system accessibility using a modified two-step floating catchment technique

Langford, Mitchel; Fry, Richard; Higgs, Gary

doi:10.1080/13658816.2011.574140

Cited by 97 publications

(70 citation statements)

References 37 publications

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“…More research is needed on how such variations can be incorporated into 'static' accessibility measures such as the E2SFCA method so as to investigate temporal variability in access to sport facilities resulting from variations in daily activities, travel time and facility opening times. Such analysis could benefit from the inclusion of detailed data on public transport provision, cycle and walking paths as well as knowledge of commuting patterns and enhancements have been made to floating catchment areas models that permit different types of complex travel behaviour to be incorporated into calculations (Fransen et al, 2015;Langford et al, 2012;Mao and Nekorchuk, 2013). …”

Section: Discussionmentioning

confidence: 99%

Accessibility to sport facilities in Wales: A GIS-based analysis of socio-economic variations in provision

2015

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Previous studies concerned with investigating the relationship between levels of physical activity and aspects of the built environment have often led to inconsistent and mixed findings concerning associations between the availability of recreational or sport facilities and area socio-economic status. Further complications may arise when analysis is conducted separately for access to either publicly available or private facilities or where alternative methodological approaches to measuring accessibility are adopted. This paper provides a review of such research before exploring the potential use of methods for examining variations in accessibility based on enhanced floating catchment area (FCA) models which are increasingly being advocated in medical geography applications. Using bespoke tools developed within a commercial GIS package, which are being made publicly available by the authors, and a national database of sport facilities, variations in accessibility are investigated in relation to a widely used measure of deprivation in the UK. Findings from this analysis suggest that whilst those living in deprived areas of Wales have greater potential access to publicly available sporting opportunities, associations with privately owned facilities are reversed for some distance thresholds and at different spatial scales. The paper concludes by drawing attention to the implications of such findings given current financial pressures on local government and other sport and leisure providers and highlights how spatial analytical techniques can be used to monitor such trends.

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Section: Discussionmentioning

confidence: 99%

Accessibility to sport facilities in Wales: A GIS-based analysis of socio-economic variations in provision

2015

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“…Measurements of accessibility, defined as the relative generalized transportation costs of reaching activity locations from given origins, has been a research topic in transportation planning, urban planning and geography for many decades (Geurs and Van Wee, 2004;Hansen, 1959;Langford et al, 2012;Luo and Qi, 2009). Generalized transportation costs include both monetary (e.g.…”

Section: Access To Public Cooled Spacementioning

confidence: 99%

Household accessibility to heat refuges: Residential air conditioning, public cooled space, and walkability

Chester

Eisenman

Hondula

et al. 2016

Environment and Planning B: Urban Analytics and City Science

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Access to air conditioned space is critical for protecting urban populations from the adverse effects of heat exposure. Yet there remains fairly limited knowledge of the penetration of private (home air conditioning) and distribution of public (cooling centers and commercial space) cooled space across cities. Furthermore, the deployment of government-sponsored cooling centers is likely to be inadequately informed with respect to the location of existing cooling resources (residential air conditioning and air conditioned public space), raising questions of the equitability of access to heat refuges. We explore the distribution of private and public cooling resources and access inequities at the household level in two major US urban areas: Los Angeles County, California and Maricopa County, Arizona (whose county seat is Phoenix). We evaluate the presence of in-home air conditioning and develop a walking-based accessibility measure to air conditioned public space using a combined cumulative opportunities-gravity approach. We find significant variations in the distribution of residential air conditioning across both regions which are largely attributable to building age and inter/intra-regional climate differences. There are also

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“…The second issue of any spatial accessibility model is concerning the selection of a distance decay function, which is generally used to derive relative distance weights for the distance impedance parameter in the spatial accessibility model. Five different distance decay functions have been reported in the literature-inverse power [5], linear [10], exponential [2], Epanechnikov kernel [9], and Butterworth filter functions [10]; however, none of those studies has exclusively analysed the effect of a distance decay function on spatial accessibility measures. The third issue deals with the method of delineation of population catchment areas for each service centre.…”

Section: Introductionmentioning

confidence: 99%

Spatio-Temporal Analysis of Spatial Accessibility to Primary Health Care in Bhutan

Jamtsho

Corner

Dewan

2015

IJGI

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Geographic information systems (GIS) can be effectively utilized to carry out spatio-temporal analysis of spatial accessibility to primary healthcare services. Spatial accessibility to primary healthcare services is commonly measured using floating catchment area models which are generally defined with three variables; namely, an attractiveness component of the service centre, travel time or distance between the locations of the service centre and the population, and population demand for healthcare services. The nearest-neighbour modified two-step floating catchment area (NN-M2SFCA) model is proposed for computing spatial accessibility indices for the entire country. Accessibility values from 2010 to 2013 for Bhutan were analysed both spatially and temporally by producing accessibility ranking maps, plotting Lorenz curves, and conducting spatial clustering analysis. The spatial accessibility indices of the 205 sub-districts show great disparities in healthcare accessibility in the country. The mean-and median-based classification results indicate that, in 2013, 24 percent of Bhutan's population have poor access to primary healthcare services, 66 percent of the population have medium-level access, and 10 percent have good access.

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Measuring transit system accessibility using a modified two-step floating catchment technique

Cited by 97 publications

References 37 publications

Accessibility to sport facilities in Wales: A GIS-based analysis of socio-economic variations in provision

Accessibility to sport facilities in Wales: A GIS-based analysis of socio-economic variations in provision

Household accessibility to heat refuges: Residential air conditioning, public cooled space, and walkability

Spatio-Temporal Analysis of Spatial Accessibility to Primary Health Care in Bhutan

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