Document Type


Publication Date


Subject: LCSH

Sustainable engineering, Sustainability, Transportation--United States


Environmental Engineering | Industrial Engineering | Mechanical Engineering | Transportation Engineering


Sustainable transportation in the U.S. is essential for long-term economic growth and mobility, and environmental preservation. Using a non-radial slack-based measurement data envelopment analysis (SBM-DEA) model and state-level data, this study assesses the environmental efficiency of the transportation sector in the U.S. from years 2004 to 2012. In addition to environmental efficiency, carbon efficiency and potential carbon reduction were estimated for the 50 U.S. states. The findings of this study reveal that U.S. transportation sector was environmentally inefficient; U.S. states had an average transportation environmental efficiency score below 0.64. Therefore the states could substantially reduce carbon emissions to improve the environmental efficiency of their transportation sectors.


This is the authors' accepted version of the article published in Transportation Research Part D Transport and Environment. The published article may be accessed at



Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Publisher Citation

Yong Shin Park · Siew Hoon Lim · Gokhan Egilmez ·Joseph Szmerekovsky. Environmental efficiency assessment of U.S. transport sector: A slack-based data envelopment analysis approach. September 2016 Transportation Research Part D Transport and Environment 09/2016; DOI:10.1016/j.trd.2016.09.009



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.