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Historic HPMS Data (Universe) - 1990
Historic Highway Performance Monitoring System universe data for the year 1990 -
Historic HPMS Data (Universe) - 1991
Historic Highway Performance Monitoring System universe data for the year 1991 -
Historic HPMS Data (Universe) - 1987
Historic Highway Performance Monitoring System universe data for the year 1987 -
Historic HPMS Data (Universe) - 1985
Historic Highway Performance Monitoring System universe data for the year 1985 -
Historic HPMS Data (Universe) - 1989
Historic Highway Performance Monitoring System universe data for the year 1989 -
Historic HPMS Data (Universe) - 1988
Historic Highway Performance Monitoring System universe data for the year 1988 -
Historic HPMS Data (Universe) - 2000
Historic Highway Performance Monitoring System universe data for the year 2000 -
Historic HPMS Data (Universe) - 1998
Historic Highway Performance Monitoring System universe data for the year 1998 -
Historic HPMS Data (Sample) - 1980
Historic Highway Performance Monitoring System sample data for the year 1980. -
Historic HPMS Data (Universe) - 1994
Historic Highway Performance Monitoring System universe data for the year 1994 -
Historic HPMS Data (Universe) - 2003
Historic Highway Performance Monitoring System universe data for the year 2003 -
Historic HPMS Data (Sample) - 1999
Historic Highway Performance Monitoring System sample data for the year 1999 -
Historic HPMS Data (Sample) - 2000
Historic Highway Performance Monitoring System sample data for the year 2000 -
Historic HPMS Data (Universe) - 1980
Historic Highway Performance Monitoring System universe data for the year 1980 -
Historic HPMS Data (Sample) - 1985
Historic Highway Performance Monitoring System sample data for the year 1985 -
Historic HPMS Data (Sample) - 1981
Historic Highway Performance Monitoring System sample data for the year 1980 -
Historic HPMS Data (Sample) - 1983
Historic Highway Performance Monitoring System sample data for the year 1983 -
Historic HPMS Data (Universe) - 2008
Historic Highway Performance Monitoring System universe data for the year 2008 -
Historic HPMS Data (Universe) - 2001
Historic Highway Performance Monitoring System universe data for the year 2001 -
Historic HPMS Data (Sample) - 1984
Historic Highway Performance Monitoring System sample data for the year 1984