[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. …

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.

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.

Looked at the wiki page, I could deal with that! https://upload.wikimedia.org/wikipedia/commons/1/10/Diverging_diamond_redone.svg

There’s been one here for a couple years, works very well once you get used to it. Felt wierd to turn left at the off ramp directly onto the left side of the overpass. Redo of an existing overpass to improve traffic flow going to and from I-5,

Diverging diamond interchanges

Safety

texases May 29, 2024, 7:36pm 9

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:

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Diverging diamond interchanges

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