Historic Highway Performance Monitoring System sample data for the year 1980.
Historic Highway Performance Monitoring System sample data for the year 1980
Historic Highway Performance Monitoring System sample data for the year 1982
Historic Highway Performance Monitoring System sample data for the year 1983
Historic Highway Performance Monitoring System sample data for the year 1984
Historic Highway Performance Monitoring System sample data for the year 1985
Historic Highway Performance Monitoring System sample data for the year 1986
Historic Highway Performance Monitoring System sample data for the year 1980
Historic Highway Performance Monitoring System sample data for the year 1988
Historic Highway Performance Monitoring System sample data for the year 1989
Historic Highway Performance Monitoring System sample data for the year 1990
Historic Highway Performance Monitoring System sample data for the year 1991
Historic Highway Performance Monitoring System sample data for the year 1992
Historic Highway Performance Monitoring System sample data for the year 1993
Historic Highway Performance Monitoring System sample data for the year 1994
Historic Highway Performance Monitoring System sample data for the year 1995
Historic Highway Performance Monitoring System sample data for the year 1996
Historic Highway Performance Monitoring System data sample for the year 1997
Historic Highway Performance Monitoring System data sample for the year 1998
Historic Highway Performance Monitoring System sample data for the year 1999
Historic Highway Performance Monitoring System sample data for the year 2000
Historic Highway Performance Monitoring System sample data for the year 2001
Historic Highway Performance Monitoring System sample data for the year 2002
Historic Highway Performance Monitoring System sample data for the year 2004
Historic Highway Performance Monitoring System sample data for the year 2005
Historic Highway Performance Monitoring System universe data for the year 1983
Historic Highway Performance Monitoring System universe data for the year 1985
Historic Highway Performance Monitoring System universe data for the year 1986
Historic Highway Performance Monitoring System universe data for the year 1987
Historic Highway Performance Monitoring System universe data for the year 1988
Historic Highway Performance Monitoring System universe data for the year 1989
Historic Highway Performance Monitoring System universe data for the year 1990
Historic Highway Performance Monitoring System universe data for the year 1991
Historic Highway Performance Monitoring System universe data for the year 1992
Historic Highway Performance Monitoring System universe data for the year 1993
Historic Highway Performance Monitoring System universe data for the year 1994
Historic Highway Performance Monitoring System universe data for the year 1995
Historic Highway Performance Monitoring System universe data for the year 1996
Historic Highway Performance Monitoring System universe data for the year 1997
Historic Highway Performance Monitoring System universe data for the year 1998
Historic Highway Performance Monitoring System universe data for the year 1999
Historic Highway Performance Monitoring System universe data for the year 2000
Historic Highway Performance Monitoring System universe data for the year 2001
Historic Highway Performance Monitoring System universe data for the year 2002
Historic Highway Performance Monitoring System universe data for the year 2003
Historic Highway Performance Monitoring System universe data for the year 2004
Historic Highway Performance Monitoring System universe data for the year 2005
Historic Highway Performance Monitoring System universe data for the year 2006
Historic Highway Performance Monitoring System universe data for the year 2007
Historic Highway Performance Monitoring System universe data for the year 2008