EVALUATION OF THE SIOMETER AS A DEVICE FOR MEASUREMENT OF PAVEMENT PROFILES

Highway engineers have always been concerned with providing pavements of acceptable serviceability. The serviceability of a highway segment, which is largely a function of pavement roughness, is a widely used criterion for deciding when pavements are in need of rehabilitation. For this application, various statistics are currently used as indicators of pavement serviceability, the most common being the present serviceability index. These statistics are largely determined from measurements of pavement roughness. Various devices and procedures have been developed for accomplishing these measurements. Of practical necessity, devices for measuring pavement roughness must be capable of providing repeatable measurements at normal highway speeds. In addition, devices that do not require difficult calibration procedures, that possess the capability for field processing of the data collected, and that are relatively inexpensive to own, operate and maintain are most desirable. The Siometer, which is currently used by the Texas State Department of Highways and Public Transportation (SDHPT) for evaluation of pavement riding quality, holds promise as an instrument for the routine collection of profile data on a network-wide scale. The Texas SDHPT has recently begun investigating the profile-measuring capability of the Siometer. A unique feature of this device is the statistical modeling procedure for characterizing the vehicle on which it is installed, which lends portability to the Siometer. In it, the parameters of the statistical model are determined in a self-calibration procedure that is run before profile data are collected. To evaluate the applicability of the Siometer as a device for profile measurements, profile measurements with the Siometer were compared with those from a profilometer.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1990/1260/1260-013.pdf
• Record URL:
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1260, Measurement of Pavement Surface Condition 1990. 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
• Authors:
  • Fernando, Emmanuel G
  • Walker, Roger S
  • Lytton, Robert L.
• Publication Date: 1990

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 112-124
• Monograph Title: Measurement of pavement surface condition 1990
• Serial:
  • Transportation Research Record
  • Issue Number: 1260
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Alternatives analysis; Measurement; Pavements; Profilometers; Riding qualities
• Uncontrolled Terms: Profiles
• Old TRIS Terms: Siometers
• Subject Areas: Highways; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00600724
• Record Type: Publication
• ISBN: 0309050138
• Files: TRIS, TRB, ATRI
• Created Date: Oct 31 1990 12:00AM