A SocioDemographic Analysis of Northeast Atlanta I-85 Peak-Period Commuters Likely to Be Affected by Implementation of Value Pricing Along the Corridor

Abstract

In the summer of 2007, data on peak period travelers on Interstate 85 in Metropolitan Atlanta were collected to provide insight on commuter behavior and demographics in preparation for potential value pricing activities to be implemented on the corridor. Over 120,000 license tags of vehicles in both HOV and general purpose lanes were recorded during the field study. 23,000 household locations corresponding to vehicles observed at three sites located along a 16-mile segment of I-85 slated to be a HOV-to-HOT demonstration project were further analyzed in terms of potential travel distance, travel time, and income characteristics. On average, vehicles seen at the field locations traveled at least 10 miles along I-85, much of it within the HOT lane corridor. Additionally, associated households exhibited higher incomes and longer travel times at a representative block group level than did the general population. Data on specific travel time, distance, and income of daily commuters are helpful in assessing a proper pricing structure for tolls along the pilot corridor. Thus, methodology for identifying likely commuters from a field “snapshot” as well as basic pricing guidelines on a per-mile and per-corridor basis is included in this paper.

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