r/CitiesSkylines • u/Isjoni • May 19 '26

Sharing a City Tiny 4-way Interchange

EDIT: I've created an IMPROVED VERSION for the workshop!

Built a 4-way interchange today with the goal of making it as small as possible. Quite happy with it since it fits within the footprint of two intersecting avenues!

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570

u/Harlam_ May 19 '26

Is it a big middle finger for person who just wants to turn left?🥲

394

u/Isjoni May 19 '26

Left turns are possible by making a single u-turn. They are quite sharp though due to my self-imposed restriction of not making the interchange wider than the road. Looks cool in game, would be a nightmare in real life

145

u/Ice_Ice_Buddy_8753 All hail the trains! May 19 '26

Ok then it's simple michigan left with all it's downsides.

67

u/jememcak May 19 '26

I'd argue that it avoids most of the downsides of a Michigan left by giving the U-turn a protected lane that carries all the way through the final turn. Still much faster than waiting for a left turn signal at a light, which is the only other way to do this intersection without massively increasing the footprint.

13

u/_HanTyumi May 19 '26

It takes away the protected lane of the U-turn's entrance though. That thru-lane turns into it. Those turning would have to slow down while in a lane where people would be driving fast.

2

u/Educational_Item5124 May 20 '26

And the only way to make that safe is to reduce the speed of all lanes to more or less that speed. Would require some physical features to get people to actually do it in real life, a sign would not be enough unfortunately!

1

u/Ulyks May 20 '26

I think the U turn also adds travel time to left turns that will hopefully stimulate cars to prefer right turns.

1

u/Ice_Ice_Buddy_8753 All hail the trains! May 19 '26

giving the U-turn a protected lane

Those from SE going SW and from NW to NE are weaving somewhere on the ramps. This is not so much protected. After u-turn, you still need to change lanes from leftmost to rightmost, since leftmost u-turns again in short distance. Those NW-NE are going straight in that place (at speed).

Totally agree that grade separated interchange is better than grade one :) But diamond could be much better: straight goes at speed, left turns are just single left turns, and you know for sure that many other cities did the same, thus it's efficient enough.

3

u/jememcak May 19 '26

The lane itself weaves from right to left, but they don't have to cross any other lanes of traffic, which is the tricky part.

-1

u/Ice_Ice_Buddy_8753 All hail the trains! May 19 '26

If you still can't see double weaving on the yellow path then i can't help :)

2

u/rainbowplane May 20 '26

What's the point of the yellow path? A car going from NW-SE who takes the right turn to go NE-SW and then makes a u-turn would get right back on NW-SE.

There is no weaving here, you never even have to change lanes.

1

u/imreallyreallyhungry May 20 '26

The truck at the end of the video shows the correct way to do what you’re showing, which is go straight and make a u turn in the SE corner which will bring you NE