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Comment by freditup | Hacker News Reader

The picture of the roundabout from above at the beginning of the article is extra confusing because it doesn't have the final lane markings yet and the ones you can see are misleading.

The (presumably) final markings[0] make things less confusing.

[0]: https://www.google.com/maps/place/High+Rock+Rd,+Washington+9...

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Ah, thanks for that.

I was looking at the markings that are there, and they made it seem like traffic approaching the roundabout would have priority over traffic already on it.

They made a video that explains how to navigate the roundabout, and shows what it will actually look like (with yield markings)[1]

[1]: https://youtu.be/07_m7HHiZRw

What the hell is that "dump truck with trailer" on a really long connector at 3:50? Is that a thing in some parts? How does that navigate almost any kind of roadway safely?

They're called "pup" trailers [1] (example photo [2]), and the very long hitch exists for a few reasons: per-axle weight limit, respecting max weight capacity of smaller bridges, and ease of unloading [3] among them.

1: https://titanww.com/what-is-a-pup-trailer/

2: https://imgur.com/raDJVVL

3: https://www.youtube.com/watch?v=mU5L_2TMjKc (sorry, terrible handheld video)

I guess that's exaggerated to proof that it works?

Um, if your new traffic feature requires an explanatory video, then you've done something wrong...

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