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Are these more common than I think? To be honest, I'm not certain I've ever seen these outside of Des Moines. Elsewhere, they either have the red globe centered above the arrows/globes, or everything's aligned in a five-stack (or they've gone to FYAs). Do these exist elsewhere? Here's one for reference.
Not sure if these are Gen 3, since these were installed in the early-1990s.
Sweden uses this, but for right turns.
Quote from: riiga on November 05, 2017, 09:27:01 AMSweden uses this, but for right turns.They use this setup for the rare left turn filter signals too, right? I know they're uncommon but I seem to recall something you posted awhile back that showed a left turn arrow attached on the left.
Quote from: jakeroot on November 05, 2017, 04:43:03 PMQuote from: riiga on November 05, 2017, 09:27:01 AMSweden uses this, but for right turns.They use this setup for the rare left turn filter signals too, right? I know they're uncommon but I seem to recall something you posted awhile back that showed a left turn arrow attached on the left.Indeed (looks like this), though I've only seen it with a single arrow that lights up when the protected phase begins. Looking up the official regulations it seems it is allowed to use the double arrow version for left turns, but only if "there is a valid reason and it does not risk traffic safety".
Interesting. So, basically, it's a lagging left, with no oncoming left turns permitted. I assume the double arrow version would operate similar to ours, lighting up at the beginning of the cycle, instead of the end?