Estimation of performance indices for the planning of sustainable transportation systems

Authors:
Alexander Paz;Pankaj Maheshwari;Pushkin Kachroo;Sajjad Ahmad
Affiliations:
Department of Civil and Environmental Engineering, University of Nevada, Las Vegas, NV;Department of Civil and Environmental Engineering, University of Nevada, Las Vegas, NV;Transportation Research Center and Department of Electrical and Computer Engineering, University of Nevada, Las Vegas, NV;Department of Civil and Environmental Engineering, University of Nevada, Las Vegas, NV
Venue:
Advances in Fuzzy Systems - Special issue on Fuzzy Logic Applications in Control Theory and Systems Biology
Year:
2013

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Abstract

In the context of sustainable transportation systems, previous studies have either focused only on the transportation systemor have not used a methodology that enables the treatment of incomplete, vague, and qualitative information associated with the available data. This study proposes a system of systems (SOS) and a fuzzy logic modeling approach. The SOS includes the Transportation, Activity, and Environment systems. The fuzzy logic modeling approach enables the treatment of the vagueness associated with some of the relevant data. Performance Indices (PIs) are computed for each system using a number of performance measures. The PIs illustrate the aggregated performance of each system as well as the interactions among them. The proposed methodology also enables the estimation of a Composite Sustainability Index to summarize the aggregated performance of the overall SOS. Existing data was used to analyze sustainability in the entire United States. The results showed that the Transportation and Activity systems follow a positive trend, with similar periods of growth and contractions; in contrast, the environmental system follows a reverse pattern. The results are intuitive and are associated with a series of historic events, such as depressions in the economy as well as policy changes and regulations.