The use of either of these two metrics in any spatial anal-Neighborhood configurations determined by different distance metrics ysis may result in inaccurate results [10] . Ideally, travel time provides the most accurate estimate of a patient's travel from their place of residence to a given health facility [15] . While accessibility studies may profitably employ this method, its use in spatial analytical models is inhibited by the particularity of its calculation, which tends to be heavily affected by local features, both in space and in time.