HOW YA DOIN?

AN IMPLICATION OF PRESENT SERVICEABILITY INDEXES (PSI'S) IS THAT PAVEMENT CONDITION BE PERIODICALLY INVENTORIED OVER THE ENTIRE LENGTH OF THE HIGHWAY, BOTH TO GATHER EXPERIENTIAL DATA FOR DESIGN PURPOSES AND TO PROJECT MAINTENANCE AND REHABILITATION. HOWEVER, SEASONAL OR ANNUAL SURVEYS COULD NOT BE MADE WITH THE CHLOE PROFILOMETER, WHICH HAD AN OPERATIONAL SPEED OF ONLY 3 MPH. EARLY ATTEMPTS TO OVERCOME THIS PROBLEM RESULTED IN INSTRUMENTS THAT DID NOT SIMULATE THE RIDE EXPERIENCED BY CAR PASSENGER. THIS WORK EVENTUATED IN BROKAW'S ROAD METER, WHICH ASSUMES THAT MOVEMENT FELT BY THE PASSENGER IS A CONSEQUENCE OF MOVEMENT OF THE REAR AXLE AND HENCE THAT MEASUREMENT OF ITS EXCURSIONS PROVIDES AN ADEQUATE MEASURE OF SERVICEABILITY. HOWEVER, RIDABILITY DOES NOT PROVIDE A MEASURE OF STRUCTURAL CAPACITY, I.E., THE ABILITY OF THE PAVEMENT STRUCTURE TO CARRY ITS TRAFFIC WITHOUT FAILURE. TO DATE, THE BENKELMAN BEAM AND THE DYNAFLECT CANNOT BE MOUNTED ON VEHICLES TRAVELLING AT HIGHWAY SPEEDS. IN ANY EVENT, THE IMPLICATIONS OF PSI'S AND STRUCTURAL ADEQUACY FOR MAINTENANCE AND REHABILITATION PROGRAMS ARE FAR FROM OBVIOUS.

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/sr/sr133/133-005.pdf
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • LeClerc, R V
• Conference:
  • Workshop on Pavement Evaluation Using Road Meters
  • Location: West Lafayette Indiana, United States
  • Date: 1972-4-18 to 1972-4-20
• Publication Date: 1973

Media Info

• Media Type: Digital/other
• Pagination: p. 11-16
• Monograph Title: PAVEMENT EVALUATION USING ROAD METERS
• Serial:
  • Highway Research Board Special Report
  • Issue Number: 133
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Condition surveys; Driver rehabilitation; Failure; Forecasting; Pavement maintenance; Pavements; Serviceability; Structural analysis; Structural mechanics
• Uncontrolled Terms: Rehabilitation; Serviceability Index; Structural behavior
• Subject Areas: Design; Highways; Pavements;

Filing Info

• Accession Number: 00207529
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: May 21 1973 12:00AM