A diverging diamond interchange (DDI) is a type of diamond interchange in which the two directions of traffic on the non-freeway road cross to the opposite side on both sides of the bridge at the freeway.
DDI - Open
Reviews
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I thought it was a great experience. Great to learn about different ways to improve capacity and safety at intersections. Lots of alternatives.
Class was informative and engaging.
Very well presented information and the workshop kept my attention.
Gil was thorough and enthusiastic, which made enjoyable/relatable presentation.
Very realistic alternatives with clear pros and cons. Explains what intersections work best based on criteria. Great course. Gil was extremely knowledgeable.
Was interesting that pedestrians play such an important / significant role, seems like it’s often forgotten.
Gil has a lot of real world application experience.
Very knowledgeable and fielded questions effectively.
It was wonderful. Instructors knew what they were talking about and were passionate about the subject manner.
The concepts were clearly explained and backed up by theoretical and real-world examples.
I thought it was great. I appreciate the conversation on things done well and not so well as well as general tips to keep in mind.
Best documentation I have received at a seminar. It has relevant reference material, and in not merely a duplication of the PowerPoint presentation.
Well done with many useful tools for future design problems that may occur.
I appreciated the specific design details and rationale – much better than some other presentations where the material was very abstract and theoretical. Good pictures. Instructor very well prepared and interested in the material – a huge help.
Great instructor, very knowledgeable.
The instructor was very confident in his knowledge of the subject.
Really enjoyed the course – covered enough detail, but not so much to get bogged down.
This is probably the best training course I’ve ever been at. Great job.
This course was a great learning experience by providing many different approaches to solve a variety of problems.
Gave a good overview of intersection and interchange options while encouraging participants to be creative and think about things more.
Great photos for examples and great technical expertise displayed.
Gilbert was passionate and a very good instructor. Good job and good class!
Thought it was an excellent presentation. Provides better understanding of intersection alternatives and appropriate application to solve design issues.
It will open my mind to not just “follow standards” and do what is right/safe.
I think Gil’s experience in the design and instruction of various intersections was most valuable. Very knowledgeable.