How do I connect the initial highway to my six-lane road?

I noticed that I got some initial traffic problems at the point where the initial highway is connected to my city. At the beginning I simply elongated both roads that came from that highway, but this doesn’t seem to scale.

What I wanted to do now is to create a single six-lane highway from these two four-lane roads. I’d be open to continue to use two roads in parallel here, but I didn’t manage to add any way of crossing between the lanes when I tried that idea.

So, how do I merge two one-way roads into a single two-way road? Or, if my idea is really bad, what is a good way to connect the initial highway access to my fledgling city?

Here’s a screenshot of the roads I want to connect, if my description wasn’t entirely clear:

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Answer

The simplest, easiest and most compact way to connect the starting highway to a smaller main road is to just use a pair of one-way roads – one set from the incoming highway to the end of the main road, and one from the end of the main road to the outgoing highway.

This isn’t necessarily the best junction, but it avoids traffic lights and allows uninterrupted flow of traffic on to and off of the highway – all for very little effort. I’ve found it to be sufficient for quite a long while after starting a city, I get much more traffic build up elsewhere first.

At the start of the game you cannot build additional highways, so for now you can use one-way 2-lane roads (see left image). This isn’t great though – as well as looking a bit odd, the 2-lane road also has a lower speed limit than both the highway and six-line that it connects. It still works pretty well, but you should upgrade these links to use highway once you unlock them (see right image).

Highways at the top. 6-lane at the bottom.
2-lane version is left image. Highway version is right image.
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Also, as a bonus, you can see an extra outbound highway link coming from the left for trucks leaving my industrial area.
Note how that merges with the other highway section in a way that doesn’t interrupt traffic.

As said, this still isn’t perfect. If you note the inbound road has a ‘turn right’ arrow in its right hand lane – which allows traffic to U-turn back onto the highway. In the highway version, this actually means only the left two of the three lanes will be used to merge.

Attribution
Source : Link , Question Author : John Doe , Answer Author : DMA57361

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