Traffic volumes on the California state highway system.
Description
Viewability
Item Link | Original Source |
---|---|
Limited (search only) 1078-1980 | University of Michigan |
Limited (search only) 1981-1983 | University of Michigan |
Limited (search only) 1984-1986 | University of Michigan |
Limited (search only) 1987-1989 | University of Michigan |
Limited (search only) 1990 | University of Michigan |
Limited (search only) 1990-1991 | University of Michigan |
Limited (search only) 1992-1993 | University of Michigan |
Limited (search only) 1994-1995 | University of Michigan |