Abstract
Transportation planning in the United States is moving to widespread use of performance-based planning methods as new federal requirements for metropolitan planning organizations (MPOs) are implemented. In addition to requirements for measures of safety, infrastructure condition, and travel reliability, many MPOs are adopting additional performance measures including those of complex socioeconomic issues. This study explores current planning practice in using a performance-based approach to tackle such an issue: location affordability, defined as an affordable level of combined cost burdens for housing and transportation. A review of long-range transportation plans at 21 large MPOs provides information on how location affordability is represented in regional transportation plans, how it is defined and measured, and how it is integrated into the planning process. The results are interpreted using a theoretical framework designed to help match planning methods to the conditions of a planning situation. The framework, Christensen’s matrix of planning problems, provides insights into the use of performance measures for location affordability and how performance measurement programs can be designed to support more effective planning for this and similarly challenging issues.
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