On Wed, Dec 27, 2017 at 4:04 AM, Tom Pfeifer <[email protected]> wrote: > > > As for your continuous green light, you might have always observed that it > is on, maybe because you have never been there at a time when it might be > off
In the US, where a light is continuous green, I've only ever seen it implemented one of two ways: - The signal that has the continuous green only has one aspect. The only way it's going dark is in a power outage or the bulb blows. - The signal is a three-aspect, but only the green is wired up, and there is a sign next to it that explicitly says "This light is always green". I've also seen lights that are continuous red, again, only in two different ways: - The signal that is continuous red is two aspect, the top one is steady and the bottom one has a blinker bulb; a sign indicates that you may only turn right on flashing red after stopping or no turn on steady red. The only signals I knew that did this has been replaced by a stop sign and a right turn only sign. - The signal is a red globe and has a right turn only sign or a sign that reads "This light does not turn green." This only makes sense where right turn on red after stop is a thing that exists.
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