Mobile retroreflectivity best practices handbook.

Details

• Creators:
  Benz, Robert J. ; Pike, Adam M. ; Kuchangi, Shamanth P. ; Brackett, Quinn
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Optical measurement
  • Calibration
  • Retroreflectivity
  • Road marking materials
  • Data collection
  • Geographic information systems
  • Road markings--Texas--Handbooks, manuals, etc.
  • Traffic signs and signals--Texas
  • Reflectors (Safety devices)
• Publication/ Report Number:
  FHWA/TX-09/0-5656-P1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Product; Sept. 2006-Aug. 2008
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  This handbook documents best practices related to proper use of the mobile retroreflectometer, sampling of ; sites for data collection, and handling of mobile retroreflectivity data. The best practices described in this ; handbook are derived from the results of Texas Department of Transportation (TxDOT) Project 0-5656 and the ; author’s observation in using the mobile retroreflectometer. The first part of the handbook provides ; information on sampling of pavement markings, periodic data quality checks, and data file naming ; conventions. The sampling procedure described here provides a systematic way of reducing the number of ; samples under a constrained budget. File naming conventions suggested in this handbook will be helpful in ; automating mobile retroreflectivity data handling and analysis. ; The second section of the handbook provides information on equipment required to calibrate the mobile ; retroreflectometer and collect the data. This handbook also describes the best practices for initial setup and ; calibration of the mobile retroreflectometer and calibration checks. Since several factors change as data are ; being collected, best practices for accounting for changes in variables, such as variations in vehicle speed and ; operating temperature, etc., are described. ; The final section pertains to best practices in data handling and suggested analysis of mobile data. This handbook ; elaborates on the consistency of data file headers and quality checking of data. A prototype of automation ; for data analysis is demonstrated that will prove handy in dealing with large amounts of mobile data.
  More +
• Format:
  PDF
• Funding:
  0-5656
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16768/dot_16768_DS1.pdf
• File Type:
  [PDF - 1.07 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:45527dfff1650d9ff8a58701e1b076c54ecf1a4e2810f448c816166d4347210f