This data represents HPMS Sample limits that correspond to the HPMS Section Data. This dataset contains expansion factors that are used to expand the attributes to State wide aggregation. More information regarding the Sample dataset is contained in the HPMS Field Manual. The Mid-America contains data for the following States: Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Oklahoma, South Dakota, Texas, and Wisconsin

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 1980

Historic Highway Performance Monitoring System sample data for the year 1982

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 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 1985

Historic Highway Performance Monitoring System sample data for the year 1986

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 1980

Historic Highway Performance Monitoring System sample data for the year 1988

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 1989

Historic Highway Performance Monitoring System sample data for the year 1990

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 1991

Historic Highway Performance Monitoring System sample data for the year 1992

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 1993

Historic Highway Performance Monitoring System sample data for the year 1994

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 1995

Historic Highway Performance Monitoring System sample data for the year 1996

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 1997

Historic Highway Performance Monitoring System data sample for the year 1998

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 1999

Historic Highway Performance Monitoring System sample data for the year 2000

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 2003

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 sample data for the year 2006

Historic Highway Performance Monitoring System sample data for the year 2007

Historic Highway Performance Monitoring System sample data for the year 2008

Historic Highway Performance Monitoring System sample data for the year 2009