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Overlap Segment Type Methodology

Soheil Sajjadi
Arcadis
Overlap Segment Type Methodology was posted on June 29th, 2018 at 4:20 PM EDT
regarding Chapter 14: Freeway Merge and Diverge Segments

• What is the measure of the worse operating condition for overlap segment type in case both ONR and OFR method represent the same LOS? Is it Density? o On page 14-5: “In many cases, the influence areas of adjacent ramps may overlap one another. In such cases, each influence area is analyzed separately with the methodology of this chapter. For the overlap area, the analysis resulting in the worse operating characteristics or LOS is applied. This general approach also applies to merge or diverge influence areas that overlap weaving segments.

Scott Washburn
University of Florida
RE: Overlap Segment Type Methodology was posted on June 29th, 2018 at 4:49 PM EDT

Yes, it is density, specifically the D_R value as calculated with Eqs. 14-22, 14-23.

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