Evaluation of video detection systems, volume 3 : effects of windy conditions in the performance of video detection systems.

Details

• Creators:
  Medina, Juan C. ; Benekohal, Rahim F ; Chitturi, Madhav V.
• Corporate Creators:
  University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Illinois. Department of Transportation. Bureau of Materials and Physical Research ; Illinois Center for Transportation
• Subject/TRT Terms:
  • Digital video
  • Vehicle detectors
  • Detection and identification systems
  • Traffic surveillance Digital video
  • Traffic monitoring
  • Traffic safety
  • Vehicle detectors
• Publication/ Report Number:
  FHWA-ICT-09-047;ICT-09-047, UILU-ENG-2009-2018
• Resource Type:
  Tech Report
• Geographical Coverage:
  Illinois
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  The performance of three Video Detection Systems (VDS), namely Autoscope, Iteris, and Peek, was evaluated ; at stop bar and advance locations, at an instrumented signalized intersection located in Rantoul, Illinois, utilizing ; a side-by-side installation and large data sets covering a variety of conditions. This report contains the analysis ; and findings of the VDS performance under windy conditions during cloudy noon, sunny morning, and nighttime. ; There are three other reports that describe the effects of adverse weather, illumination, and adjusting the ; configuration of the VDS zones. The performance of the VDS in windy conditions was assessed based on the ; frequency of false, missed, stuck-on, and dropped calls (errors in detection); and was compared to calm weather ; scenarios (without wind). Results indicate minor wind effects during cloudy conditions at the stop bar zones, and ; less than 10% increases in the false calls at advance zones. In the sunny morning scenario (where long ; shadows were observed) false calls increased significantly at both stop bar (22-39%) and advance zones (20- ; 70%), missed calls increased at advance zones for one VDS, while they decreased for the other two VDS, and ; stuck-on calls increased by less than 2% due to the shadow of the crossing street pole. At nighttime, false calls ; increased at stop bar zones (5-53%), and at advance zones (2-27%), and there were small fluctuations in the ; percentage of missed calls.
  More +
• Format:
  PDF
• Funding:
  ICT- R43
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16723/dot_16723_DS1.pdf
• File Type:
  [PDF - 453.46 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:eb2f73f5b18adbf0d048402e6dc0df4e6b48ba3b5d8c0865302d996b1f16fe9d2b818ac6a3197d55bd1285508c9a8c0f616bfaa0516055fc2e403dc353d977ca