Pinavia interchange

New unique high capacity two-level road interchange without intersecting traffic flows and only four small overpasses - newly patented invention, no existing prototypes yet. The visualization of western Vilnius bypass, Lithuania

Category:

Science & Technology

Tags:

• road
• construction
• interchange
• animation
• traffic flow
• braiding
• visualization
• bypass
• invention
• Pinavia

[ElmerCat]

It would be interesting to see your visualization redrawn so as to make the four functional bridges as short as possible, with the rest of the ramps made simply as cut and filled earth.

Since not all interchange locations are perfectly flat and symmetrical, I'd like to imagine the same principal applied with irregular geometry to accommodate surrounding terrain or other crossings.

(I've also been trying to wrap my mind around how this design would work if there were five roads intersecting.)

[ausriusj]

@ElmerCat: good suggestion, we wanted this ourselves. We'll try to persuade the architects who made the drawing it will not affect their sense of beauty. :-) Asymmetric case is easy to imagine: try to project this drawing onto a sloped surface - you will get some ellipse or another. If there are more crossings, they need to be dealt with separately some way away. (Five-roads solution is messy - see our website pinavia dot com)

[ausriusj]

@dodgyhingst: take a look at the "Pinavia 70" animation - the genius lies in the center. :-) You can use the center area of the junction, I mean - sell it for a much higher price than before, so in principle it is not so costly overall. This is basically a question of PPP (public-private partnership) - and different countries have different ways to deal with it.

[ausriusj]

@txrvs: beautiful, the interchange in Kuwait does look similar. Thanks for the example! They have advantage of very high speeds for driving through. My point remains valid though: they lost the center of the junction, and they have 5 overpasses. Minor thing: the left turn lane makes two turns inside the junction, so its turn radius and the driving speed drops. In Pinavia case we loose high speeds, but we gain parking space inside it, so it is perfect for cities with park&ride system.

[ausriusj]

@jwebley: this is a two-level junction only, and in principal it does the same, as a 4-level junction does. Our junction is at least twice cheaper. Also, you can sell the land inside the junction, because it becomes easily accessible from all 4 roads (cf. the other video: Pinavia 70), and depending on the junction size and market value of the land it might even be possible to make a profit out of it all. So no, this is NOT expensive at all.

[ausriusj]

@james: by the way, concerning the driver headaches: you do not need to worry how your lane goes, it does not intersect any other. So you just follow the signs to choose the right lane before entering the junction, and you simply appear in the right exit. And it is quite natural - if you want to turn right, you choose the right lane, and if you want to exit into the left road, you choose the left entry lane. It is quite more complicated in Clover Leaf junctions, I would say.

[littlejennsmall]

I drive on one of plenty of examples of left lane exits in the US nearly every day. I don't see how it could be illegal if so many are in use on major highways in major cities.

[NewPatBack48]

would not work in US. no left exits allowed

[tonysofla]

Not sure if it's patentable, sure any patent-office will sell you the piece of paper.

But it would be up to lawyers and courts to decide if it’s enforceable.

Better off trying to sell the layout and animations to architects for a fixed fee.

This could work in Florida, and that state do allow exit on left.

[ElmerCat]

The naysayers are clueless; this is a great design! It would be a great concept for the upcoming replacement of the Turcot interchange in Montreal. Recovering the high-value useable space in the center is brilliant!

[dodgyhingst]

Lots of bridges which means lots of iced over roadways for locations with snow/ice activity. Bridges cost more than roads which never leave the ground. Gov'ments are cash-strapped. Great idea...for a perfect world.

[aj71792]

looks like just another interchange to me.

[Mudimush]

Expensive! Too much elevated roadway and too many overpasses.

Federal policy bans left side exits and entrances.

A patent automatically kills all state and local use, because they are usually constitutionally prohibited from paying royalties for public works projects.