Simulated trajectories of the full 2000 census population of Buffalo, New York. Each simulated person was placed randomly along a road within his or her census tract of residence and then independently performed road-network-constrained, truncated Lévy walks for 8 hours of simulated time, moving at 4 km per hour. The trajectories were then sampled at 30 minute intervals. The original dataset was created for studying indexes of activity-space segregation. It is archived at https://zenodo.org/record/2865830#.XpYviKsza00 and described more fully in Palmer (2013), Activity-Space Segregation: Understanding Social Divisions in Space and Time (http://arks.princeton.edu/ark:/88435/dsp01k643b130h). This version has been created to aid in testing contact-tracing apps and mobility analysis tools. The fields are: latitude: latitude longitude: longitude time: UNIX time in milliseconds ID: random ID assigned to each individual