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Comment by mc32 | Hacker News Reader

Do they use steady red lights for all "right turn onlys" which on the other end have opposing traffic (do not enter)? Or is this an exception to the right turn only + do not enter at the other end? Harrison and 10th[1] in SF for example.

[1]https://www.google.com/maps/@37.7714317,-122.4115453,3a,75y,...

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Germany does not usually have "right turn only"s, at all. That’s the simple answer – this traffic light is the only "right turn only" on a normal intersection in Germany. (which is why it has its own wikipedia entry, and website).

It does. "Right turns only" is a white bent arrow on a blue ground. But it does not affect precedence like a red light with a green arrow does (or a stop sign would for that matter). You often see it on T-junctions with one-way roads.

Yes, and no. That’s a right turn only at an uncontrolled intersection. Germany has none at controlled intersections (those with traffic lights).

I could swear I've seen "right turn only" signs at controlled intersections when coming off the Autobahn. I think it was for a right turn onto a B road.

This is an exception and a too-clever-for-its-own-good use of a traffic light. Usually we use a blue sign with a white arrow pointing right to show you can only turn right.

Thanks for the clarification. It's a bit odd in that it already has the right turn only sign but they decided to also install a traffic light --maybe the solid striped median line and the right turn only were not enough to signal people and there were enough accidents that the DoT decided to make it really obvious that vehicles should not cross.

It does not have a right turn only sign. It just has a green arrow.

The only reason you can only ever turn right is because the light stays red, if it were to turn green you'd be allowed to cross the intersection in any direction.

There are also different rules that need to be followed when crossing the intersection on account of a green arrow than, if it were merely a turn right only situation.

Half meter above that green arrow right, is a blue right turn only sign. It's on the same pole.

The traffic light takes precedence over the static sign (which is only there as a fallback).

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