(https://i.imgur.com/GvruomV.png)
Does an interchange like this exist? I'm calling it the Split Milwaukee B interchange as it resembles a Milwaukee B but just inside the median of the arterial. Here is a Synchro model of the interchange in action.
https://www.youtube.com/watch?v=HFlo90vZxmM
That might work well when combined with service drives instead of just a plain interchange.
Here are some of the benefits of the Split Milwaukee B Interchange:
1. Flyover ramps are not needed as the loop ramps use the arterial bridge decks.
2. Pedestrian exposure is minimized as all of the freeway's off-ramps are contained inside the median of the arterial street.
3. Traffic signals are simple 2-phase signals that only stop one direction of traffic along the main arterial. Arterial traffic moves much smoother in this design compared to a DDI.
While this wont fit at just any interchange, this does become a practical alternative when you consider the massive DDIs that Florida is starting to build. Below is the required footprint of the Split Milwaukee B interchange juxtaposed over the University Parkway DDI built in Florida. As long as you can spread the arterial street about 600-700 feet apart (IE. the yellow lines), this design could work.
(https://i.imgur.com/NttjPFV.png)
http://www.arizonaroads.com/urban/papago.html
Quote from: NE2 on November 01, 2018, 07:25:01 AM
http://www.arizonaroads.com/urban/papago.html
Your ability to dig up historical information never ceases to amaze me.
Why would this work any better than a classic slip-ramp diamond with Texas-style U-turns, or a split diamond interchange?
Or, for that matter, a displaced left turn diamond using one-way parallel frontage roads along the freeway?