1. AASHTO. 2010. “GreenDOT.” American Association of State Highway and Transportation Officials. Accessed September 15, 2011. http://144.171.11.40/cmsfeed/TRBNetProjectDisplay.asp?ProjectID = 2621.
2. ApulD.2011. “BenReMod: A Web-Based Model for Comparing the Environmental Impacts from Road Construction Materials.” Presentation at Ohio Transportation Engineering Conference. Accessed August 30. University of Toledo. Accessed August 30. https://www.dot.state.oh.us/engineering/OTEC/2007%20Presentations/Wednesday%20Sessions/Session%2054%20-%2010-30%20am%20C226/54B-Apul/OTEC2007.pdf.
3. ASCE. 2013. “Report Card for America's Infrastructure.” Accessed June 28. http://www.infrastructurereportcard.org/.
4. Construction Congestion Cost (CO
3
) Basic Model
5. Calculation of Greenhouse Gas Emissions for Highway Construction Operations by Using a Hybrid Life-Cycle Assessment Approach: Case Study for Pavement Operations