Spotlight on Pavement Safety: North Carolina Department of Transportation - Experience with the Laser Texture Scanner (LTS)
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Spotlight on Pavement Safety: North Carolina Department of Transportation - Experience with the Laser Texture Scanner (LTS)

Filetype[PDF-719.90 KB]


English
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Details:

  • Corporate Creators:
    United States. Department of Transportation. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-HIF-24-009
  • Resource Type:
    Brief
  • Right Statement:
    Public Domain
  • Geographical Coverage:
    United States;North Carolina
  • Corporate Publisher:
    United States. Department of Transportation. Federal Highway Administration
  • Abstract:
    The North Carolina Department of Transportation (NCDOT) borrowed a Laser Texture Scanner (LTS) from the Federal Highway Administration (FHWA) Mobile Asphalt Technology Center (MATC) Equipment Loan Program in late 2021. The NCDOT Materials and Tests Unit’s Data Collection and Investigations section had initially planned simply to practice with the technology and explore its potential on their many routine pavement investigations. However, the team quickly saw that the device had immediate applicability for studies* they were conducting at the time on the evolution of pavement friction and macrotexture in dense-graded asphalt overlays. Those studies included identifying pavement characteristics that potentially influence crash rates on North Carolina roadways after pavement construction. NCDOT researchers applied the LTS on field pavement within work zones and on field cores extracted from a number of pavement resurfacing projects around North Carolina, and observed good correlation between the two types of measurements. The LTS scans were also compared to data collected via highway speed macrotexture profilers and sand patch test results, as per NCDOT’s existing practice for measuring pavement surface macrotexture characteristics. "The biggest finding in those few months was discovering the value that the LTS would bring to the department and in our research," says Joseph Barbour, Data Collection and Investigations Engineer for NCDOT. "We see a lot of promise in this technology."
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