Extended Field Trials of LRAIL for Automated Track Change Detection

Details

• Creators:
  Fox-Ivey, Richard ; Nguyen, Thanh V. ; Laurent, John
• Corporate Creators:
  Pavemetrics Systems, Inc.
• Corporate Contributors:
  United States. Department of Transportation. Federal Railroad Administration. Office of Railroad Policy and Development ; United States. Department of Transportation. Federal Railroad Administration. Office of Research, Development, and Technology
• Subject/TRT Terms:
  • Triangulation
  • Algorithms
  • Detection and identification systems
  • Automatic train location
  • Safety
  • Inspection
  • Railroad tracks
  • Laser triangulation
  • change detection
  • LRAIL
• Publication/ Report Number:
  DOT/FRA/ORD-20/14
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Technical Report – September 13, 2018– December 31, 2019
• Contracting Officer:
  Stuart, Cameron
• Corporate Publisher:
  United States. Department of Transportation. Federal Railroad Administration
• Abstract:
  LRAIL is a 3-dimensional laser inspection system that combines high-speed laser triangulation sensors and artificial intelligence to automatically inspect the condition of, and detect safety-related changes in, railway infrastructure. For this project, LRAIL technology was installed on a specialized hi-rail inspection trailer and data were captured on Amtrak lines over a 4-month period in three separate deployments across an 8-mile test loop near the Delaware-Pennsylvania border. Repeat runs in the same direction and reverse runs were captured during each deployment to model repeatability, mean, and standard deviation of measurements. The noise floor for change detection was also modeled through analysis of repeat runs and the detection of known/deliberate changes. LRAIL change measurements were determined to be highly repeatable, with an overall average of 99.28 percent agreement between runs.
• Format:
  PDF
• Funding:
  693JJ618C000023
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/48701/dot_48701_DS1.pdf
• File Type:
  [PDF - 15.19 MB]
• Collection(s):
  US Transportation Collection ; Federal Railroad Administration
• Main Document Checksum:
  urn:sha256:b61e59185ec36bc6d6745ffaf6be1fae1930599f35ed781ef791ac763efa7ceb