heftig

In Germany:

I don’t remember ever seeing “combined lights” with single red or yellow lamps and multiple greens. Level crossings often have only red and yellow lights, missing green.

Traffic lights are positioned at the entrances to intersections, not the exits. They also come with backup signs (stop sign, yield sign, etc.) for when the lights are disabled or defective. Working traffic lights override these signs.

Solid green also means an unprotected left turn that must yield to oncoming traffic.

A green arrow traffic light can override a solid red to give you a protected turn. A green right arrow on a sign gives you an unprotected right turn on a red. Without this, you cannot turn right on a red.

Flashing yellow means ‘caution’ in general and is usually used on auxiliary lights to warn about crossing pedestrians after a turn, who have right of way. When the main traffic lights are flashing yellow, they’re disabled or defective.

I remember that the city I grew up in, long ago, used to disable many traffic lights at night. Their website claims that “due to the large number of visually impaired and blind citizens, the traffic lights at the most important traffic junctions are kept in operation at night”, so I guess this still continues. The village I’m living in these days has no traffic lights at all.

Do you have a source for this? AFAICT this is untrue. Mono audio using just the white connector exists, but this depends on configuration and does not make the red connector a difference signal.

Don’t get into crypto. It’s only useful for scams and money laundering.

I’ve tried, but Signal is just too cumbersome to use. I sorely miss a web client and my family members sorely miss an Android tablet client. This makes it hard to recommend.