[image] The 'diverging diamond interchange' may come soon to a busy intersection near... An unconventional design known as the diverging diamond interchange has proven to be safer and more efficient than conventional left turn lanes. Road planners across the country are switching sides. …

I can see where that would take some getting used to Diverging diamond interchange A diverging diamond interchange (DDI), also called a double crossover diamond interchange (DCD), is a subset of diamond interchange in which the opposing directions of travel on the non-freeway road cross…

Everything new takes some getting used to. The question is whether it is safer and more efficient. The answer is yes on both counts. I have experienced it and it works great. If driving through a DDI confuses you at all after your first time through it then my guess is you should not be driving. …

We have several here in VA. It took a little getting used to, but easy to navigate.

We have many planned and one currently under construction as well as one or 2 up I 75 from me. I have encountered them… the first time was confusing, the 2nd time was OK. Our nearest one will be completed just before the start of the tourist season. I hope there is a traffic camera accessible from…

Yep, they work fine. I use one that connects to I-95. At rush hour intersection will have delays, but not as bad as intersections with left turn lanes. IMO, the cloverleaf is still better, no traffic lights required, but they do require more land. [IMG_2443]

[image] Purebred: IMO, the cloverleaf is still better, no traffic lights required, but they do require more land. I agree, never had an issue with a cloverleaf and they are very easy to navigate and safe… I have never even heard of a DDI, but after watching a video of it, I understand it, but…

In NC I navigated one near Asheville, and they are building one outside the Raleigh-Durham airport. It is just a bit strange. I do agree the cloverleaf is better, but yes they need much more space.

I wonder when the last clover leaf was built. Bet it’s been years. Those tight curls and resulting short merge lanes are a problem. Now all the new ones have long ramps in all directions. Here’s one I pass many days: [image]

The cloverleaf is easy to understand, for sure. My civil engineer father really liked them but as time went on, he agreed it was past its time. Why? Traffic volume. The uphill 270 degree turn slows the traffic at the same time as they are trying to merge into full speed traffic flow which is sharin…

[image] Purebred: IMO, the cloverleaf is still better, no traffic lights required, but they do require more land. A cloverleaf has a weave area. A DDI doesn’t. I wouldn’t say the cloverleaf is better.

Diverging diamond interchanges

Safety

It_s-Me May 29, 2024, 6:35am 2

I can see where that would take some getting used to

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Diverging diamond interchanges

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