CORRELATIONS OF WISCONSIN ROAD METERS

THE WISCONSIN DIVISION OF HIGHWAYS PURCHASED ITS FIRST ROAD METER IN SEPTEMBER 1968. BEACUSE ITS PAVEMENT EVALUATION METHOD WAS THE PSI, THE DIVISION DECIDED TO CORRELATE ROAD METER MEASUREMENTS WITH THOSE OF THE CHLOE PROFILOMETER. IN THE ORIGINAL CORRELATION THE SUMMATION OF THE SQUARED DEVIATIONS OF THE ROAD METER WAS RELATED TO THE SLOPE VARIANCE OUTPUT OF THE CHLOE. THREE YEARS LATER ANOTHER CORRELATION WAS NEEDED BEACUSE THE DIVISION HAD PURCHASED A NEW ROAD METER CAR AND BECAUSE SEVERAL MARKED CHANGES WERE INCORPORATED IN THE 1971 ROAD METER. THE NEW CORRELATION PROCEDURE, WHICH IS MORE COMPLICATED THAN THE FIRST ONE, IS DESCRIBED. THE DATA OBTAINED WILL BE ENTERED INTO A FIVE-STEP COMPUTER PROGRAM THAT SHOULD PRODUCE A CALIBRATION CURVE RELATING ROAD-METER AND CHLOE OUTPUTS, A CONVERSION CHART RELATING ROAD METER OUTPUT DIRECTLY TO PSI, AND INFORMATION CONCERNING THE VARIABILITY OF THE TWO INSTRUMENTS.

Media Info

  • Media Type: Print
  • Features: Figures;
  • Pagination: pp 73-74
  • Monograph Title: PAVEMENT EVALUATION USING ROAD METERS
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00207536
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: May 21 1973 12:00AM