Evaluating Streetlight Estimates of Annual Average Daily Traffic in Oregon

This report summarizes the evaluation of Streetlight Data’s Annual Average Daily Traffic (AADT) product by comparing with Oregon Department of Transportation’s automatic traffic recorder data and AADT estimates derived from short term counts in Bend, MPO. Using an evaluation methodology established by Turner et al. (2008), the report concludes that accuracy was measured to be 18% (N = 172) median (mean equals 25%) absolute percent error for the automatic traffic recorder comparison and 32% (N = 66) median (mean equals 59%) absolute percent error for the short term based AADT estimate comparison. Other measures of data quality were reasonable but the accessibility data quality measure would suffer for network wide (all segments in the network) data accessibility since the setting gates for Streetlight Data’s process would be time consuming. Data quality is difficult to fully answer outside the context of a use of the data and its recommended that future evaluations apply the AADT product in a safety, vehicle miles traveled, or air quality analysis to determine the magnitude of difference between currently available data (from models or traditional traffic counts) and these third party data products. Future evaluations should also look at any potential costs savings of purchasing third party data compared with traditional traffic count data collection.

• Record URL:
  https://www.oregon.gov/ODOT/Programs/ResearchDocuments/StreetlightEvaluation.pdf
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/66263
• Corporate Authors:

  Oregon Department of Transportation

  Research Section
  555 13th Street NE
  Salem, OR  United States  97301

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Roll, Josh
  • 0000-0002-9617-5045
• Publication Date: 2019-6

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Figures; Maps; References; Tables;
• Pagination: 35p

Subject/Index Terms

• TRT Terms: Accuracy; Alternatives analysis; Annual average daily traffic; Automatic data collection systems; Data quality; Data recorders; Evaluation and assessment; Methodology; Traffic counting; Traffic counts
• Geographic Terms: Oregon
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 01710504
• Record Type: Publication
• Report/Paper Numbers: OR-RD-19-11
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Jul 9 2019 11:27AM