01334452

Component

https://doi.org/10.3141/2223-11

http://scholar.google.com...icki&publication_year=2011

The diverging diamond interchange (DDI) has proved to be an ideal interchange solution because of its safety features, low costs, and operational benefits in different scenarios of turning movement volume. Previous studies have compared the DDI with other interchange forms by using the same number of through lanes for each interchange design. Those studies used microsimulation software for the analysis and had a limited number of turning movement combinations to sample. This study considered a large sample of turning movement combinations and compared more interchange configurations to determine whether the DDI might have more applications than previous studies have indicated. A basic form of the critical lane volume method was used to evaluate the different interchange configurations. Although this method is not the most perfect method, there is reason to believe that the results are accurate enough to indicate that the DDI may be a viable option in many more scenarios than previously thought. This study concludes that it is worthwhile for practitioners to consider the DDI for any interchange improvement when comparing it with other diamond interchange forms.

01352479

11-3636

English

pp 88-95

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167345

Print

Figures (3) ; References (7) ; Tables (5)

Diamond interchanges; Highway design; Highway operations; Traffic safety; Traffic simulation; Turning traffic; Types of interchanges

Diverging diamond interchanges

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB

Feb 17 2011 6:35PM

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• Evaluating the Michigan Access Management Program: Findings and Lessons Learned
• Free-Gap Evaluation for Two-Lane Rural Highways
• Improving Intersection Design Practices
• Operating Speed Model for Low-Speed Rural Two-Lane Highways: Design Consistency Module for Interactive Highway Safety Design Model
• Operational Characteristics of Super 2 Highways in Texas
• Operational Effects of Signalized Superstreets in North Carolina
• Travel Time Evaluation of a U-Turn Facility: Comparison with a Conventional Signalized Intersection