Sustainability Enhancement Tool for State Departments of Transportation Using Performance Measurement

Abstract

The goal of this paper was to develop a performance measurement–based approach for transportation agencies, such as state departments of transportation, to evaluate and enhance sustainability. This research proposes a performance measurement–based framework and evaluation methodology for sustainable transportation, linked to agency strategic planning goals. The methodology was applied and tested for the Texas Department of Transportation (TxDOT). This sustainability enhancement methodology is implemented within the highway-corridor planning process. The research identified 12 performance measures, including measures of congestion, safety, alternative modes, and air quality, to address the goals and objectives in TxDOT’s strategic plan. The multiattribute utility theory (MAUT) decision-making approach was applied to quantify and normalize the selected performance measures and calculate sustainability index values for current and predicted future corridor conditions. This paper also presents the results from a pilot application of the methodology for a section of US-281 in San Antonio, Texas. The findings made it possible to identify specific performance measures and specific portions of the corridor that needed improvement to enhance the overall sustainability. This research provides a useful tool to assess the relative sustainability of transportation corridors now and in the future.

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