Vehicle occupancy. - Kuzmyak, J. Richard; United States. Office of Highway Planning; United States. Federal Highway Administration; Comsis Corporation (Washington, D.C. : U.S. Dept. of Transportation, Federal Highway Administration : [Supt. of Docs., U.S. G.P.O., distributor], ; Springfield, Va. : National Technical Information Service [distributor], 1981)
"Office of Highway Planning"--Cover.
"Comsis Corporation"--1st prelim. p.
"April 1981."
"Contract no. DTFH61-80-C-00047"--1st prelim. p.
Keywords: Automobile driving -- United States -- Statistics; Automobiles -- United States -- Statistics; Traffic surveys -- United States