Assessing Interactions Between Access Management Treatments and Multimodal Users

The roadway system must accommodate many types of users – bicycles, passenger cars, pedestrians, transit, and trucks. Increasingly, stakeholders are recognizing that there should be an appropriate balance among the various modes. Access connections to the roadway are a part of the system. There is increasing recognition that the location and design of access to and from roadways impacts all transportation modes. As the emphasis on considering all users grows, there is a need to better understand the interactions between multimodal operations and access management techniques and treatments, and the tradeoff decisions that must be made. In addition, suburban and urban land uses continually redevelop, and access management planning for retrofitting corridors should consider the multimodal needs as well as the need to upgrade arterial performance. Past studies have shown that arterial roadway characteristics such as turning movements, unsignalized and signalized access density, median type, turn-lanes, sidewalks, bike lanes, and bus turnouts can affect corridor operations. Studies have also shown that effective access management treatments reduce conflict points along roadways, leading to reductions in delays and crashes. However, there is limited understanding of the effects of access management treatments on multimodal operations, and vice versa, particularly treatments in combination. There is the need to better understand the circumstances under which these treatments have significant or negligible operational impacts. In order to obtain this understanding, quantitative relationships must be developed that can assess measures-of-effectiveness of access management techniques and multimodal interactions for, but not limited to, average travel speed; travel time reliability; and capacity preservation. Practitioners would benefit from having more effective guidance on how to weigh, evaluate, and understand the effects and trade-offs when implementing access management techniques in a multimodal corridor. The objective of this research is to identify and determine unknown relationship definitions between access management techniques and the various users/modes along multimodal corridors. The deliverable will be a final report that documents the conduct of the research and includes quantitative information that can be incorporated into publications such as the AASHTO Green Book and the Highway Capacity Manual, as well as used in the development of simulation software. The end product should be useable by practitioners both for technical analysis and to support their efforts to explain technical findings to non-transportation professionals and public stakeholders.


  • English


  • Status: Active
  • Funding: $800000
  • Contract Numbers:

    Project 03-120

  • 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:

    Dekelbab, Waseem

  • Performing Organizations:

    Kittelson and Associates, Incorporated

    610 S.W. Alder Street
    Portland, OR  United States  97205
  • Principal Investigators:

    Butorac, Marc

  • Start Date: 20150811
  • Expected Completion Date: 20180731
  • Actual Completion Date: 0
  • Source Data: RiP Project 37559

Subject/Index Terms

Filing Info

  • Accession Number: 01543519
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 03-120
  • Files: TRB, RiP
  • Created Date: Nov 17 2014 1:01AM