The transportation crisis in Atlanta has attained epic proportions. Inconveniences and hardships created by too many automobiles and not enough alternatives for movement, have reached untenable levels. Getting at what lies beneath the asphalt, interrogating what drives the paving of America, along with the seemingly unstoppable space, energy, and money consumption that the current mode of mobility entails will perhaps allow for future decision-making that includes a more nuanced reading of the landscape. In an effort to understand these forces, I interrogate the creation, trajectories, and current positioning of three major Atlanta transportation projects: the Metropolitan Atlanta Rapid Transit Authority (MARTA), the bus and rail system that has been the backbone of metropolitan Atlanta’s public transportation system for the past 30 years; the Georgia Regional Transportation Authority (GRTA), which is the super-agency created in 1999 in an effort to address the air quality issues in the region; and the Beltline, an enormously popular current proposal to build a 22-mile loop of greenspace, transit, and other amenities around an inner loop of the city built on existing rail beds. This investigation engages a wide literature on race, space, and place; attendance at various meetings and relevant symposia; archival data; and in-depth interviews with 20 area transportation experts and interested parties. As race and regionalism are so central to understanding power and procedure in metro Atlanta, particular attention is given to racial and spatial practices. This research reveals the contest over issue framing between car-centered growth promoters, environmental (or green) actors, and social justice, or equity proponents and how the outcomes of this triumvirate’s competition results in regional transportation policies and procedures. The examination of the three instances; MARTA, GRTA, and the Beltline, give us an excellent window into the making of mobility in the region. INDEX WORDS: Transportation, Atlanta, Race and Regionalism, Mobility, GRTA, Beltline, MARTA.

This thesis investigates the potential of express bus to serve travel demand in a polycentric region, using the Atlanta metropolitan area as a case study. Express bus, which serves as the primary mode of line-haul transit commuting for most suburbs in the Atlanta region, is primarily focused on serving traditional suburb-to-city commutes. However, more than half of the commutes in the Atlanta metro are to suburban locations. This thesis investigates the potential of an author-devised plan to enhance the transit commute to suburban employment centers, using express bus as the primary technology. Working mostly with existing routes, the plan incorporates ideas found in the literature, such as intermediate stops, transfer hubs, and local bus serving first and last mile connections. The thesis also tested existing plans, off of which the author's plan was devised. Tests were performed using the trip-based model of the Atlanta Regional Commission (ARC). Dramatic gains were seen as a result of the author-devised plan, such that 8,000 daily transit trips are added, and express bus ridership increases by 50%. Performance improved especially for routes in which intermediate stops were added. The results have implications for how transit can better serve travel demand in a polycentric region.

The thesis develops and documents a workflow for applying TRANSIMS to the analysis of Developments of Regional Impact (DRI). The proposed workflow will consider perspectives of both the transportation agency responsible for the evaluating the DRI and the transportation engineer responsible for performing the analysis. TRANSIMS offers a comprehensive framework for managing inputs and outputs that follow a transportation planning workflow. Not a single, monolithic software application, TRANSIMS is a suite of 65 small, light-weight, single-task tools for creating and manipulating GIS shape files and SQL data base files, estimating the elements of a four-step transportation modeling process, and computing link and vehicle delays for a given transportation network. Current analysis techniques for developments of regional impact require that the analyst apply arbitrary or non-repeatible estimates for trip assignments at the regional level. Because of the modular nature of the TRANSIMS, implementing each DRI as a layer in the GIS data base will permit the mixing and matching of multiple DRI within a local area, permitting a risk-based approach to the evaluation of multiple DRI, any of which may or may not actually happen. This thesis focuses exclusively on the review of DRI analysis techniques, review of TRANSIMS modules, and development of a proposed DRI workflow within the TRANSIMS framework.