Design and Evaluation of a Dynamic Dilemma Zone System for a High Speed Rural Intersection : Research Summary

Details

• Alternative Title:
  Design & Evaluation of a Dynamic Dilemma Zone System for a High Speed Rural Intersection : Research Summary
• Creators:
  Chang, Gang-Len
• Corporate Creators:
  University of Maryland (College Park, Md.). Department of Civil and Environmental Engineering
• Corporate Contributors:
  Maryland. State Highway Administration. Research Division
• Subject/TRT Terms:
  • Dilemma zone
  • Intersection elements
  • Highway traffic control systems
  • Signalization
  • Traffic signal control systems
  • Traffic signal controllers
  • Traffic signal hardware
  • Dilemma zone, Signal Control Logic
• Resource Type:
  Tech Report
• Geographical Coverage:
  Maryland
• Edition:
  Research summary.
• Corporate Publisher:
  Maryland. State Highway Administration
• Abstract:
  Improving traffic safety is a priority transportation issue. A tremendous amount of ; resources has been invested on improving safety and efficiency at signalized ; intersections. Although programs such as driver education, red-light camera ; deployment, and operational improvements to roadway geometry have all ; contributed to a safer driving environment, significantly reducing traffic signalrelated ; crashes remains a challenging task. For example, with the rapid urban ; sprawl, many signals have been installed at high-speed rural intersections due to ; their increasing traffic volumes. Most of those intersections have posted speed limits ; over 50 mph, which can pose a hazardous situation for motorists when approaching ; a signal during its yellow phase. Drivers in such situations could be caught in a socalled ; dilemma zone: they can neither pass through the intersection before the light ; turns red, nor can they slow down comfortably at the stop line. Insufficient ; protection of motorists within the dilemma zone often leads to red-light running and ; could result in severe accidents due to the high speeds.
  More +
• Format:
  PDF
• Funding:
  SP708B4J
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24924/dot_24924_DS1.pdf
• File Type:
  [PDF - 53.42 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:5bd1b5e62a5188254159ef89e9680c3f490f1e2987421bba10ecea80064cf8be