Abstract
This presentation will share an overview of INDOT’s experience with the design of diverging diamond interchanges (DDIs). Specific discussion will focus on design refinements being made in the most recent DDIs in Indiana, as well as lessons learned from existing DDIs in the areas of geometrics, operations and performance, and human factors/driver behavior. We will also review case studies and before-and-after analyses of existing DDIs.
Session Number
82
Session Title
Diverging Diamond Interchanges: Design Refinements and Performance
Track Title
TRAFFIC OPERATIONS
Location
PMU 240/FACE
Date of Version
2026
Start Date
3-17-2026 3:00 PM
End Date
3-17-2026 3:50 PM
Included in
Diverging Diamond Interchanges Lessons Learned: Design Refinements and Performance
PMU 240/FACE
This presentation will share an overview of INDOT’s experience with the design of diverging diamond interchanges (DDIs). Specific discussion will focus on design refinements being made in the most recent DDIs in Indiana, as well as lessons learned from existing DDIs in the areas of geometrics, operations and performance, and human factors/driver behavior. We will also review case studies and before-and-after analyses of existing DDIs.
