Pinavia 70

Pinavia 70 (www.pinavia.com) - a newly invented road interchange designed for 70 km/h speed. No traffic flows are intersecting though the interchange is of two levels only. Additionally, the center of the junction is freely accessible and utilizable - no other interchange of the same capacity and simplicity has this feature. Commercial value of the land inside the junction compensates the construction costs of the junction itself.

Category:

Science & Technology

Tags:

• Pinavia
• road junction
• interchange
• animation
• invention
• traffic congestion solution

[ausriusj]

@gaudetjaja: And for dominant directions - just increase the number of lanes for THAT particular direction. Difficult to expand? Make overpasses somewhat larger in advance. Anyway, I agree - not so easy to accommodate unforeseen traffic. Oh well, show me the design of similar capacity which is easy to expand...

[ausriusj]

@gaudetjaja: Let me add: to have this junction on a normal motorway would make its diameter at least 2 km to allow 100 km/h speeds. (anyway, take a look at the mirror reflection of the junction - you will be surprised). So we suggest it should be built on a city bypass with moderate speeds, where a need for parking spaces exists, and where the land is expensive (even more so when we try to sell back its center).

[ausriusj]

Of course, you are right, DMahalko. This animation is not a real-world situation, just an illustration of an idea of braiding the lanes. All these suspended roads are just an architects view - for the sake of elegance I imagine. In fact it would be possible to do with just 4 short bridges (the central roads could be bent to the right until they pass under the bridge, and only then turn towards the center).

[ausriusj]

Well, if there is one, it was not intended... :-/ But now that you mention it - many square symmetric ornaments could be blamed like this.

[gaudetjaja]

It doesn't seem very safe to have left-exits to a non-motorway (i.e. the roads in the middle of the junction). Left-lane traffic typically has a higher speed, and this design allows traffic to leave the motorway at full speed. This design is also unfit in the scenario of any one direction being dominant qua traffic-flow, which is very often the case. It is very difficult to expand this design to fit an unforseen growth of traffic.

[DMahalko]

Very interesting, but all those suspended roads will be expensive to construct. A much less costly solution is to build a circular raised earthen berm with normal ground construction on the berm, and just short-span bridges where the upper roads cross the lower roads. Only would need 8 bridges for this design, 4 for the tangent ring roads, and 4 for the center usable area perpendicular roads.

[ScionLo]

I saw a nazi sign.