Hartgen, D.T., A.J. Reser, and W.E. Martin. 1994. State of the Practice: Transportation Data and Modeling Procedures for Air Quality Emissions Estimates. Center for Interdisciplinary Transportation Studies, The University of North Carolina at Charlotte, Charlotte, N.C., July.

NCHRP. 1994. Development of a Modal-Emissions Model. Research Project Statement. NCHRP Project 25-11, Transportation Research Board, National Research Council, Washington, D.C., Oct. 6.

Nizich, S.V., T.C. McMullen, and D.C. Misenheimer. 1994. National Air Pollutant Emission Trends, 1900–1993. EPA-454/R-94-027. Office of Air Quality Planning and Standards, Research Triangle Park, N.C., Oct., 314 pp.

NRC. 1994. Special Report 242: Curbing Gridlock: Peak-Period Fees to Relieve Traffic Congestion, Volumes 1 and 2. Transportation Research Board and Commission on Behavioral and Social Sciences and Education, National Academy Press, Washington, D.C.

PNGV. 1994. Program Plan. U.S. Department of Commerce, July, 37 pp.

TRB. 1991. Special Report 232: Advanced Vehicle and Highway Technologies. National Research Council, Washington, D.C., 90 pp.

Williams, R.H. 1994. The Clean Machine. Technology Review, Vol. 97, No. 3, April, pp. 20–30.



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