MINNESOTA MODIFICATIONS TO BPR ROUGHNESS INDICATOR

DURING EXTENSIVE USE OF THE ROAD ROUGHNESS INDICATOR, BUILT IN 1941 FROM BUREAU OF PUBLIC ROADS PLANS, SOME MODIFICATIONS OF THE EQUIPMENT HAVE PROVEN DESIRABLE FOR THE OBTAINING OF CONSISTENT AND DEPENDABLE ROUGHNESS READINGS. INTEGRATOR DRIVE CHANGES AND A PROFILE AND CUMULATIVE TAPE RECORDER SYSTEM HAVE BEEN INCORPORATED. AN ENTIRELY NEW INTEGRATOR BUILT AROUND A COMMERCIALLY AVAILABLE ELECTRONIC DIGITIZER SYSTEM IS DESCRIBED. /AUTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/139/139-002.pdf
• Supplemental Notes:
  • No 139, pp 29-34, 4 FIG 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:
  • Petrok, B R
  • Johnson, K L
• Publication Date: 1956

Media Info

• Media Type: Digital/other
• Pagination: 6p
• Monograph Title: Road roughness and slipperiness: some factors and test methods
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 139
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Analog to digital converters; Electronic equipment; Road meters; Tape recorders
• Uncontrolled Terms: Change; Profiles
• Old TRIS Terms: Electronic devices; Integrators
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00206789
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jun 24 1994 12:00AM