L&D Manual Turn Lane Storage Validation/Update : Executive Summary Report

Details

• Creators:
  Eustace, Deogratias ; Ponnada, Sowjanya
• Corporate Creators:
  University of Dayton. Department of Civil and Environmental Engineering and Engineering Mechanics
• Subject/TRT Terms:
  • Turning lanes
  • Intersections
  • Queuing
  • Traffic congestion
  • Traffic flow
  • Turning lanes
  • Intersections
  • Queuing
  • Traffic congestion
  • Traffic flow
• Publication/ Report Number:
  FHWA/OH-2012/13
• Resource Type:
  Tech Report
• Geographical Coverage:
  Ohio
• Edition:
  Executive summary report.
• Corporate Publisher:
  Ohio. Department of Transportation. Office of Statewide Planning and Research
• Abstract:
  The formation of queues on a highway facility is a sign of the presence of operationally ; inefficient sections of the facility. Queuing occurs at intersections in large part due to overflow ; or inadequacy of turn bays, inadequate capacity, or poor signal progression. The ODOT Location ; and Design (L&D) Manual Volume 1 has storage requirements for both signalized and ; unsignalized intersections. Figures 401-9E and 401-10E of the L&D Manual provide the ; required turn lane storage lengths which should be compared with the real world conditions to ; check for adequacy of these lengths as a measure of ensuring that accesses to the turn lanes are ; not blocked. In addition to the projected turn lane volume, ODOT’s methodology incorporates ; both deceleration (based on the speed of the roadway) and potential blockage from the adjacent ; through lane. Currently, however, there are no records whether these storage lengths computed ; by the methodology put forth in this manual are valid and accurately represent the actual ; conditions at intersections in Ohio. Consequently, collecting real world traffic and queue storage ; data at some intersections and analyzing these data is valuable for validating and/or updating the ; model ODOT is currently using. Accordingly, the purpose of this research was to collect traffic ; and queue storage data at some intersections in Ohio and use the collected data to validate and/or ; update the model in ODOT’s L&D Manual.
  More +
• Format:
  PDF
• Funding:
  134573
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24935/dot_24935_DS1.pdf
• File Type:
  [PDF - 124.69 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:a28de38acf5fbc5a701f6120cfec484054db7be25aa23459c36922ff31950ddb