Improvements to video imaging detection for dilemma zone protection.

Details

• Alternative Title:
  Project title: Improve current design of video imaging detection systems used for dilemma zone protection
• Creators:
  Middleton, Dan ; Park, Eun Sug ; Longmire, Ryan ; Charara, Hassan
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Dilemma Zone Traffic Flow Traffic Flow--Measurement--Equipment And Supplies--Evaluation Traffic Flow--Measurement--Equipment And Supplies--Texas Traffic Surveys Traffic Surveys--Texas--Equipment And Supplies--Evaluation Video Imaging Detectors
• Publication/ Report Number:
  FHWA/TX-09/0-5774-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Sept. 2006-Aug. 2008.
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  The use of video imaging vehicle detection systems (VIVDS) at signalized intersections in Texas has
  
  increased significantly due primarily to safety issues and costs. Installing non-intrusive detectors at
  
  intersections is almost always safer than installing inductive loops due to greater separation between
  
  passing motorists and field crews installing the detectors. Other factors that have contributed to the
  
  increased usage of VIVDS include the flexibility offered in terms of adjusting detection zones (e.g., with
  
  lane reassignments), the ability to send an image of the traffic stream to a traffic operations center, and
  
  no damage to the pavement structure as with inductive loops. Despite these advantages, there are
  
  situations where VIVDS need further research to ensure safe operations. The objective of this research is
  
  to determine how well the current video imaging systems deployed by the Texas Department of
  
  Transportation (TxDOT) provide dilemma zone protection at high-speed signalized intersections.
  
  Findings of this research indicate that VIVDS is better suited for stop line detection than dilemma zone
  
  detection. It will usually require two cameras and dedicated upstream poles to ensure adequate
  
  performance at speeds of 50 mph or higher. VIVDS has some inherent weaknesses that increase the
  
  number of max-outs and minor street delays compared to point detectors.
  
  
• Format:
  PDF
• Funding:
  Project 0-5774
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:f4408068e95cb44eb1a53ab0b91701527834b70db097bcc6d401311abccac46a115ce1840268d2561182f9acfabb45d57be6ada03d8d8004fe05ea97d6222aa8
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16853/dot_16853_DS1.pdf
• File Type:
  [PDF - 2.65 MB ]