Exploring the Utility of Gini Coefficients as a Measure of Temporal Variation in Public Transit Travel Time

Authors: Joseph Chestnut*, University of Denver
Topics: Transportation Geography, Temporal GIS, Urban and Regional Planning
Keywords: accessibility, time, public transit, GIS
Session Type: Virtual Paper
Day: 4/8/2021
Start / End Time: 1:30 PM / 2:45 PM
Room: Virtual 16
Presentation File: No File Uploaded

Travel times by public transit vary dramatically throughout the day. However, these variations are not the same for all commutes. If one commute origin and destination are connected by high frequency transit all day, then that commute will have less variation in travel time throughout the day. This research illustrates how that variation can be measured with gini coefficients so that inequality in travel times can be better understood. Using Denver as a case study, gini coefficients are calculated with 120 travel times by public transit throughout the day for each of almost 250,000 origin destination pairs. The utility of the gini coefficient as a predictor of the percent of the population that drives to work is then explored using a Geographically Weighted Regression (GWR).

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