- Updated almost 3 years ago • Last indexed 1 month agoHighway Performance Monitoring System (HPMS)
- Updated over 1 year ago • Last indexed 1 month agoHistoric HPMS Data (Sample) - 1980
- Updated over 1 year ago • Last indexed 1 month agoHistoric HPMS Data (Sample) - 1981
- Updated over 1 year ago • Last indexed 1 month agoHistoric HPMS Data (Sample) - 1982
- Updated over 1 year ago • Last indexed 1 month agoHistoric HPMS Data (Sample) - 1983
- Updated over 1 year ago • Last indexed 1 month agoHistoric HPMS Data (Sample) - 1984
- Updated over 1 year ago • Last indexed 1 month agoHistoric HPMS Data (Sample) - 1985
- Updated over 1 year ago • Last indexed 1 month agoHistoric HPMS Data (Sample) - 1986
- Updated over 1 year ago • Last indexed 1 month agoHistoric HPMS Data (Sample) - 1987