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Lights at the intersection take forever!! When your running late because of a tight schedule or even just slept in, time is your enemy. I've designed a system that allows a no stop intersection that will allow free flowing traffic to move on its way lights free!! this is just a model, but if I ever get a computer with the software used in industrial design I would love to upload some files!! (This is a quick instructable I made to share one of my ideas)

Step 1: Draft

First I started with an idea, I wanted to create an intersection that had no lights, what better way than to build a model to explain!!

Step 2: Base and Roads

For the base I hot glued two pieces of foam board left over from my starry night ceiling project. For the roads I used strips of cardboard.

Step 3: Main Roads

First thing is first, its time to create the two main roads, these are going to be flat against the ground. Now for the "intersecting" roads, we don't want any stops so how do we make them pass each other? We use a bridge!

Step 4: U-Turns

With U-Turns you can connect the two parallel roads to each other , so essentially from this viewpoint you have your "up and down."

Step 5: Turn Lanes

But what if you want to turn right? or left? I made a turn lane to handle this problem. No stops you just have to yield. And for left turns you have to take the turn lane and than the U-Turn lane which will be space out for reasonable time for switching the lanes.

Step 6: Thats It!

This is the No Stop Intersection in its glory! I drew arrows for a better understanding on how it all works and i hope this inspires everyone to build and design their own things!!

Interesting. We call that a Michigan left around here. I don't think they speed up flow, but they prevent head-on crashes. Check out the Paul B Henry Freeway (M-6) with a cloverleaf and a single point urban interchange. They are also doing prep work for a diverging diamond at Cascade and I-96. I hate the SPUI, and in a couple years I'll be driving that diamond to and from work.
<p>Nice! I usually say take a right and flip a U-ey haha!! Ill definitely check out the freeway!</p>
Maybe the go left problem can be solved like this. Then the bridges need to be placed a little but further from each other. Then you only have an intersection for the go lefters then you can skip the u turns which can cause a traffic jam for the other directions.
<p>I love the idea! Thanks for sending a picture!!</p>
<p>But if the traffic is quite dense you are probably going to have to stop to wait for a gap and that might cause traffic in another carriageway to snarl up. What about a roundabout inbetween the two highways?</p>
<p>Thats true! I didnt think of that, I love the idea!</p>
<p>Looks really cool, I going to show this to my little nephew.</p>
<p>Thanks! I hope this inspires him!</p>
<p>I like your model. I think your solution has a place, particularly in an intersection where most of the traffic is through traffic (there isn't much turning, most are going north/south or east/west).</p><p>I appreciated the response from livichris. I would like to see his comparison, however, to the cost (including land area requred) to a cloverleaf. I do think that in the right situation, this would be very nearly as efficient as a cloverleaf.</p><p>I have seen the &quot;u-turn in the median&quot; model used in central California. I think it has merit.</p>
Thanks! I would hope to see a comparison too and if it's worth the trouble I would love to see one of these built on a larger scale!
great model, particularly like the V shaped bridge pier. I'm a Civil Engineer who designs bridges in the UK. Assuming a 5.7m clearance below your bridge and a bridge deck thickness of another 1.4m, the ramps on either side approaching your crossing would need to be about 200m long on each side assuming a 4% approach gradient. Add to that your bridge spanning 2 lanes of traffic, 2 footways and a central reserve and you're probably looking at a bridge with a span of 24m and a similar width. In the UK an arrangement of this sort would probably cost in the region of &pound;3.5-&pound;4m. you can see how for a lot of junctions, traffic lights and congestion is the preferred option.
Thanks for the input! The cost of something like this totally blew over my head haha!! I'm glad to hear back from someone who designs these for a living!

About This Instructable

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Bio: I'm into 3d design mainly on Autodesk inventor, I love to 3d print, and am currently working with arduino (kinda). Visit my site where ... More »
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