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Turbo Roundabout
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Assets: Intersection
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504.299 KB
17 Mar, 2015 @ 12:43am
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Tremor
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Turbo Roundabout

Description
The main goal of turbo roundabouts is to direct incoming traffic toward their intended exit before entering the roundabout. This is done by separating each lane at the entrances and forcing traffic merges to be done near exits. For the roundabout to work properly urbanize evenly around it (each direction generating and expecting roughly the same amount of traffic as the others) and avoid zoning too close to it to prevent car stops near the entraces/exits.

This roundabout is quite pricey (25mil+) and requires a good large flat area to place.

Stress tested as the unique junction for a city of 4000+
4 Comments
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Tremor  [author] 21 Mar, 2015 @ 10:54am 
Yeah, roundabouts will mostly be useless if the load between all roads is not balanced. What I do is I separate industrial districts (the heavist traffic generators) into two smaller districts in opposite directions and connect the other two roundabout directions to highway interchanges. That will force traffic to move in all directions.

Although, in reality, you should be connecting each industrial district directly to a highway. Trucks shouldn't even be near your city center :)
Roundaround 21 Mar, 2015 @ 10:41am 
So it didn't seem to work much better than a regular roundabout, but I have a feeling that it's more because of the way my city was set up. The majority of the traffic through this roundabout was focused on only two of the four directions, so the traffic got congested on the one-lane ramps, especially so if traffic managed to back up to the edge of the roundabout.

Doesn't make it any less awesome a design though. I will definitely keep using it, even if not as a main juncture!
Tremor  [author] 21 Mar, 2015 @ 1:06am 
Awesome! I'll wait for your results.
Roundaround 20 Mar, 2015 @ 8:47am 
Gonna stress test this as the center of a larger city (30/40k) to see how it holds up as the joint between residential and industrial sectors. I'll let you know how it works out. :)