Development of guidelines for operationally effective raised medians and the use of alternative movements on urban roadways.

Details

• Creators:
  Qi, Yi ; Chen, Xiaoming ; Yu, Lei ; Liu, Haixia ; Liu, Guanqi ; Li, Da ; Persad, Khali R. ; Pruner,Kristopher
• Corporate Creators:
  Texas Southern University. Dept. of Transportation Studies
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Access control (Transportation)
  • Medians
  • Median openings
  • Left turn lanes
  • U turns
  • Intersections
  • Design
  • Urban highways
  • Simulation
  • State of the practice
  More +
• Publication/ Report Number:
  FHWA/TX-13/0-6644-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Corporate Publisher:
  Texas Department of Transportation. Research and Technology Implementation Office
• Abstract:
  The development of raised medians is an important access management technique commonly used in urban settings. It ; can be used to control or restrict mid-block left turns, U-turns or crossing maneuvers for implementing of alternative ; left-turn/U-turn movements. The objective of this research project was to develop guidelines for operationally effective ; raised medians and the use of alternative movements on urban roadways. To fulfill this goal, the researchers (1) ; reviewed and synthesized national and peer states’ practices, (2) conducted survey of traffic engineers, (3) conducted ; field studies, (4) analyzed the design issues relating to raised medians and alternative movements through simulation ; studies, and (5) developed guidelines for future implementation of raised medians and representative alternative ; movements in Texas. ; The results of this study provide recommendations on some critical design issues in the use of raised medians, ; including median widths, median left-turn lane lengths, placement of median openings, and the use of directional ; median openings. In addition, a set of implementation-oriented guidelines regarding the applicability, geometric ; design, and access management of three typical types of alternative movements, including restricted crossing U-turn ; (RCUT), median U-turn (MUT) and continuous flow intersection (CFI), were developed.
  More +
• Format:
  PDF
• Funding:
  Project 0-6644
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23345/dot_23345_DS1.pdf
• File Type:
  [PDF - 13.44 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:2e657695d81a99b6d6b02ace4c8d1315fb630fb1029f3681979b48c7c96eb6e911244b246869eb3642bba699eebddbe14bb78e60bd437ab3410f2f4be5a8c368