Every game ofCities: Skylinesbegins witha single map square and a highway connection. Players can build streets that branch off from the highway at first, but they can’t touch the highway itself.

That all changes when players reach the Boom Town milestone. At this point, players can build their own highways and demolish or reroute the highways that already exist on the map squares they control. This gives playersa lot of power over the traffic flowof the whole region, and if they’re not careful they can create a gridlock situation that extends to the edge of the map.

Cities Skylines Highway Roundabout

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Basic Highway Intersections

Highways have special properties compared to the other road types inCities: Skylines. First, highways are always one-way roads, and so players must build them in pairs to move traffic in every direction. Second, highways have a high speed limit that allows vehicles to move quickly across them. Third, highways don’t create any zoning squares the way other roads do. Finally, there are no stoplight intersections allowed on highways.

Another road type that unlocks with highways is the highway ramp. These ramps are also one-way only, and they’re only one lane wide, but they give vehicles the same high speed limit as a regular highway. This makes them useful as merging lanes for highways, but any type of road can intersect with a highway. This means players can upgrade highway ramps to one-way roads with two lanes, four lanes, or even six lanes if they need extra space for merging vehicles.

Cities Skylines Highway Ramps

Highway Connection Tips

Cities: Skylinesis available now on PC, PS4, PS5, Switch, Xbox One, and Xbox Series X/S.