Verification of Traffic Speed Deflection Devices’ (TSDDs) Measurements

Traffic Speed Deflection Devices (TSDDs) that measure surface deflection at traffic speeds are used by several highway agencies in the United States and other countries to provide data to help with management of the highway network. For example, these data can be used for assessment of pavement structural condition, selection of pavement treatments, and other purposes. In comparison with traditional pavement deflection measurement (e.g., falling weight deflectometers), TSDDs provide a means for acquiring extensive amounts of data in a short period of time. However, the data obtained from TSDD measurements are influenced by many factors such as pavement type, pavement structure, climatic conditions, and speed of operation. Recognizing that no widely accepted practices for verifying the measurements obtained by TSDDs is currently available, research is needed to identify the deflection measurements that are required for pavement structural assessment and other applications and develop a procedure for verifying TSDD measurements and also to develop a recommended standard practice for implementing this procedure. The objective of this research was to develop a recommended standard practice for verification of the measurements obtained by TSDDs on highway pavements for consideration and adoption by AASHTO.

• Record URL:
  http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=4749

Language

• English

Project

• Status: Completed
• Funding: $399989
• Contract Numbers:

  Project 10-105

• Sponsor Organizations:

  National Cooperative Highway Research Program

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  American Association of State Highway and Transportation Officials (AASHTO)

  444 North Capitol Street, NW
  Washington, DC  United States  20001
• Project Managers:

  Hanna, Amir

• Performing Organizations:

  Wood Environment & Infrastructure Solutions, Inc.

  6256 Greenland Rd
  Jacksonville, FL  United States  32258
• Principal Investigators:

  Rada, Gonzalo

• Start Date: 20200803
• Expected Completion Date: 20230531
• Actual Completion Date: 20230531

Subject/Index Terms

• TRT Terms: Calibration; Deflection; Highways; Instruments for measuring deformation or deflection; Pavement distress; Pavements; Structural analysis; Surveys; Traffic speed
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 01707641
• Record Type: Research project
• Source Agency: Transportation Research Board
• Contract Numbers: Project 10-105
• Files: TRB, RIP
• Created Date: Jun 7 2019 12:52PM