Evaluation of video detection systems, volume 4 : effects of adverse weather conditions in the performance of video detection systems.

Details

• Creators:
  Medina, Juan C. ; Benekohal, Rahim F ; Chitturi, Madhav V.
• Corporate Creators:
  Illinois Center for Transportation
• Corporate Contributors:
  Illinois. Department of Transportation. Bureau of Materials and Physical Research
• 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-09-039;FHWA-ICT-09-039, UILU-ENG-2009-2010
• Resource Type:
  Tech Report
• Geographical Coverage:
  Illinois
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  The performance of three video detection systems (VDS): Iteris, Autoscope, and Peek, was evaluated ; using a side-by-side installation at a signalized intersection under various adverse weather conditions including ; rain and snow in both day and nighttime, and light fog and dense fog in daytime. Four types of detection errors ; (false, missed, stuck-on, and dropped calls) were quantified at stop bar and advance detection zones, and all ; errors were visually verified using video images from the intersection. Results indicate that VDS performance ; was not greatly impacted under daytime light fog or rain conditions without wind, but significant changes were ; observed under dense fog and snow in daytime, and snow and rain in nighttime. During dense fog conditions ; Iteris and Autoscope changed their operating mode and placed constant calls due to image contrast loss, with ; potential for significant effects on traffic operation, while Peek significantly increased its missed calls. Snow in ; daytime and nighttime greatly increased false calls for the three systems (more than 50% of the VDS calls were ; false), but it had limited effects on missed, stuck-on, and dropped calls. False calls during rainy conditions ; without wind also increased, during both daytime (around 10%) and nighttime (between 10% and 50%), mostly ; due to the reflection of headlights of vehicles in the adjacent lanes. Detailed performance of the three VDS in ; each of the three stop bars and the three advance zones, as well as potential causes and effects of the most ; prominent error types are presented.
  More +
• Format:
  PDF
• Funding:
  ICT- R43
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16715/dot_16715_DS1.pdf
• File Type:
  [PDF - 1.15 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:8e5a410f2cd8efc2ef4ac0c9f558a0b8679db1968f168ce79b0e575792a29e82acf054e0e8b2364393bdcd33e67f6032eb96abe4b33a74b5f11acd2670117906