How to tag traffic signals turned off at night

In Germany, there’s no difference between blinking traffic lights and them being turned off. In both cases, they are out of service and the traffic signs apply.

What’s the difference in your country between blinking and being turned off?

Also, over here, there is only a limited variety of signs allowed together with traffic signals:

  1. Give way
  2. Priority on next intersection
  3. Priority road
  4. Priority road not going straight
  5. Stop

Only 1 and 5 could currently be handled by nodes. 3 and 4 are attributes on the way itself so there’s no way that I’d know of to somehow tag this on the traffic lights. 2 is not mapped at all as far as I can see, instead we map the corresponding give way sign.
So looking at this, we probably (also?) need a way to tag on a junction that priority is usually handled by traffic lights, since there could be cases where it’s unclear for a router if the tagged priority road applies or not.

Maybe we can start by agreeing on service_times being the proper tag for traffic lights service times? The question is: do they blink outside of these or go black and what’s the difference?