L&D Manual Turn Lane Storage Validation/Update : Executive Summary Report
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All
i


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

  • 2012-08-01

Filetype[PDF-124.69 KB]


  • English

  • Details:

    • Publication/ Report Number:
    • Resource Type:
    • Geographical Coverage:
    • Edition:
      Executive summary report.
    • NTL Classification:
      NTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLS ; NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Flow ; NTL-OPERATIONS AND TRAFFIC CONTROLS-Congestion ;
    • 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.
    • Format:
    • Funding:
    • Main Document Checksum:
    • File Type:

    Supporting Files

    • No Additional Files

    More +

    You May Also Like

    Checkout today's featured content at rosap.ntl.bts.gov

    Version 3.16