RES2023-20: TDOT RDS Data Quality Assurance and High-Resolution Content Enhancement

The need to understand the state of traffic and its dynamics is only increasing on Tennessee’s major roadways. Increasing passenger and freight demand is driving congestion and safety concerns. Tennessee Department of Transportation (TDOT) is taking major steps to address these concerns for the motoring public through capital projects, active traffic management strategies, and real time incident response. A major source of real-time roadway condition data in Tennessee is the RDS data system. Over 800 detectors across the state provide information on vehicle counts, classifications, and speeds. Crucially, they take high-fidelity measurements that are not available from many alternative sources, while being non-invasive for easy construction and maintenance. The challenge remains that powerful insights from the data can be hampered by suboptimal data quality and usability or availability limitations. Specific limitations that exist in the RDS data stream include degraded system uptime, short periodic data outages, a high degree of noise in data at some fidelity levels, and loss of sensor calibration over time.

• Record URL:
  • https://www.tn.gov/content/dam/tn/tdot/long-range-planning/research/researchsummary/res2023/RES2023-20_One_Pager.pdf
• Record URL:
  • https://www.tn.gov/content/dam/tn/tdot/research/final-reports/2023-final-reports-and-summaries/RES2023-20-Final%20Report%20-%20Approved.pdf

Language

• English

Project

• Status: Completed
• Funding: $249030
• Contract Numbers:

  RES2023-20

• Sponsor Organizations:

  Tennessee Department of Transportation

  James K. Polk Building
  Fifth and Deaderick Street
  Nashville, TN  United States  37243-0349
• Managing Organizations:

  Tennessee Department of Transportation

  James K. Polk Building
  Fifth and Deaderick Street
  Nashville, TN  United States  37243-0349
• Performing Organizations:

  Vanderbilt Center for Transportation Research (VECTOR)

  Box 1831, Station B
  Vanderbilt University
  Nashville, TN  United States  37235
• Principal Investigators:

  Barbour, William

• Start Date: 20220801
• Expected Completion Date: 20250131
• Actual Completion Date: 20250115
• USDOT Program: Transportation, Planning, Research, and Development

Subject/Index Terms

• TRT Terms: Data quality; Vehicle detectors
• Geographic Terms: Tennessee
• Subject Areas: Data and Information Technology; Highways;

Filing Info

• Accession Number: 01854608
• Record Type: Research project
• Source Agency: Tennessee Department of Transportation
• Contract Numbers: RES2023-20
• Files: RIP, STATEDOT
• Created Date: Aug 12 2022 3:22PM