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Spiral Ring Interchange (SRI) (Underground version)

This is the underground version of the Spiral Ring Interchange. It's as efficient as a Turbine Interchange, but much more compact because the roads leading to the right from any direction are placed in the middle instead of the outside of the interchange. The smaller size gives you more flexibility in placing and connecting this interchange to your highways, while keeping the benefits of a regular Turbine Interchange.

This version also has the 'Ring' built underground, so even more valuable building space is saved! Construction costs however are a lot higher compared with the elevated version!!

It's not the prettiest interchange because of all the tunnel entrances. But in a densely packed city it's barely visible because most of it will be blocked by buildings.

- Cost: 70.760,- (the elevated version only costs 43.470,-)
- Lane mathematics are applied for a good traffic flow.
- Tip. Useing the 'lane connector' tool from TM:PE you can create a perfect traffic flow. (see screenshot) All you have to do is select the lane connector tool, then select a junction on the interchange and press Ctrl+S. Because of lane mathematics all connections are automatically made.

Enjoy!


I've created updated versions of existing interchange types by applying 'lane mathematics'. With the use of several mods I've also managed to reduce the amount of nodes to a minimum and create smooth transitions between different road segments to create a smooth traffic flow. Want to see more? Visit: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2437530104

Want to know how 'Lane mathematics' work and how to use the functions of TM:PE? I recommend watching some of Biffa's traffic fixing video's at https://www.youtube.com/playlist?list=PLR5G_Kc9r-JDza2Bzd2GIA01_jVyHhhXw.

Any comments, suggestions and/or feedback is much appreciated! And if you like this asset so much that you think others should use it as well, then please rate it!