http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
summary of quality and fundamental characteristics of traffic flow
Department of Civil and Sanitary Engineering.
by Adolf D. May, Jr., and Frederick A. Wagner, Jr. Michigan State University Highway Traffic Safety Center and Dept. of Civil Engineering. Summarized by E. Clark Rowley.
"Part of a joint research program with the Michigan State Highway Department with participation of the U.S. Department of Commerce, Bureau of Public Roads."