A GIS toolkit for measuring and mapping space–time accessibility from a place-based perspective

Abstract

This paper introduces a novel GIS toolkit for measuring and mapping the accessibility of individuals to services. The toolkit contributes to earlier implementations by combining aspects of both place-based and person-based accessibility measures. To this end, place-based accessibility measures are derived from a person-based framework by considering space-time prisms which are centred at service facilities rather than individual anchor points. The implementation is also innovative by explicitly accounting for the opening hours of service delivery in its accessibility measurement. In addition, the toolkit is aimed to be user-friendly and to generate insightful and comprehensible results for non-technically-oriented users, which is illustrated in a brief case study about library accessibility in Ghent (Belgium).

Understanding the Impacts of Human Mobility on Accessibility Using Massive Mobile Phone Tracking Data

“…As an extension, Delafontaine, Neutens, and Weghe (2012) proposed a set of place-based spacetime accessibility measures incorporating the time dimension from individual-based perspectives. In the proposed measures, a round trip from residential location x to facility f was considered to construct the space-time service area centered at the facility.…”

“…Incorporating activity durations at accessible facilities, Delafontaine, Neutens, and Weghe (2012) proposed an activity duration weighted accessibility measure, DUR STP :…”

Reliable Space–Time Prisms Under Travel Time Uncertainty

“…The space-time locations between these lower and upper bounds are roughly labeled as possibly reachable locations. Delafontaine, Neutens, and Van de Weghe (2011) extended this rough space-time prism model to a constrained planar space with obstacles. The rough space-time prism can be useful in delimiting individuals' minimum and maximum space-time extents under travel time uncertainty.…”

“…The space-time prism is a postulated prism-shaped structure delimiting the set of locations that can be physically reached by an individual from specified locations within a given time budget (Miller 1991). The space-time prism model has been widely adopted in accessibility analysis (Kwan 1998;Miller 1999;Li et al 2011;Delafontaine, Neutens, and Van de Weghe 2012), travel behavior modeling (Wang and Law 2007;Fang et al 2011;X. Chen and Kwan 2012;Ronald, Arentze, and Timmermans 2012;Farber et al 2013), and tracking data modeling and visualization (Kuijpers and Othman 2009;Winter and Yin 2011;Downs and Horner 2012).…”

Public Transport Accessibility: A Literature Review

“…Accessibility can be evaluated with respect to two basic categories (Delafontaine et al, 2012) -Place based and Person based (Miller, 2007). The spatial-temporal accessibility of a public transport system measures the spatial-temporal limitations faced by passengers based on their predefined activities and the ability of the transport system to facilitate trading time for space in movement (Cheng et al, 2018).…”