Access Management in the Vicinity of Interchanges

Transportation agencies use access management techniques to balance the required mobility of a roadway facility with the accessibility needs of the adjacent land users. Operational and safety problems can result when driveways and intersections on crossroads are spaced too closely to interchange terminals. In 2004, TRB published NCHRP Synthesis 332: Access Management on Crossroads in the Vicinity of Interchanges. Since 2004 there have also been advances in intersection and interchange types and new resources to estimate safety and operational impacts. Synthesis 332 also identified research gaps that limit the ability of transportation professionals to successfully implement sound access management practices. This study aimed to (1) develop  a guide for access management in the vicinity of a freeway interchange, and (2) provide suggested language for revisions to relevant manuals such as the AASHTO Policy on Geometric Design for Roads and Streets, and the Highway Safety Manual.  NCHRP Research Report 977: Access Management in the Vicinity of Interchanges, Volume 1: Practitioner’s Guide, NCHRP Research Report 977: Access Management in the Vicinity of Interchanges, Volume 2: Research Overview; a suite of PowerPoint slides, and an Access Management Interchange Decision Tool are now available.

• Record URL:
  http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3396

Language

• English

Project

• Status: Completed
• Funding: $950000
• Contract Numbers:

  Project 07-23

• Sponsor Organizations:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  American Association of State Highway & Transportation Officials (AASHTO)

  444 North Capitol Street, NW, Suite 225
  Washington, DC  United States  20001

  National Cooperative Highway Research Program

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001
• Project Managers:

  Crichton-Sumners, C

• Performing Organizations:

  Texas A&M Transportation Institute, College Station

  Texas A&M University System
  3135 TAMU
  College Station, TX  United States  77843-3135
• Principal Investigators:

  Dixon, Karen

• Start Date: 20130620
• Expected Completion Date: 20191215
• Actual Completion Date: 20191215
• Source Data: RiP Project 37830

Subject/Index Terms

• TRT Terms: Access control (Transportation); Case studies; Freeways; Geometric design; Guidelines; Highway design; Highway safety; Interchanges; Queuing; Traffic flow; Weaving traffic
• Subject Areas: Design; Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01543914
• Record Type: Research project
• Source Agency: Transportation Research Board
• Contract Numbers: Project 07-23
• Files: TRB, RIP
• Created Date: Nov 23 2014 1:00AM