They are very usual can can be found all around. At any traffic light, railway crossing, outlets which you may block near traffic lights, left turn lanes, some tram line crossings.
No need to stop, if you do not have to stop. EdwinNL said, and linked it correctly:
Here the actual law just for reference:
Art. 75 SSV https://www.admin.ch/opc/de/classifi...index.html#a75
You have to stop there in case:
- It is part of a Stop signal.
- The traffic light is red.
- You would block the "intersection"
- You have to give way to other traffic. (Priority from the right, trams, etc.)
"Intersection" because, it also includes railway and tram tracks, bus lines, and most importantly outlets.
Some Examples:
Railway: https://goo.gl/maps/NJAxFDyGdbA2
Tram: https://goo.gl/maps/9tHbDyvA5jQ2
Outlet: https://goo.gl/maps/YKFT1Rbfox32
Left turn lane: https://goo.gl/maps/nRtwJpiUtXw
Traffic light: https://goo.gl/maps/Ze6a4Jy1BNw
If an traffic light is blinking orange, than signals (Stop, Yield), street marking (shark teeth), priority from the right apply.
If there is stop signal AND a green traffic light, then the traffic light precedes the stop signal and no stop is needed!
If there is policeman controlling traffic then this preceded any traffic light, signals, and road markings.
If hell brakes lose,all street marking, signals, and traffic lights gone or non functioning, than we still have priory from the right to keep traffic going.
Be aware: If you do a full stop on such a line if not needed (intersections, outlets etc.) or mandated (stop, actual red lights, closed railway crossing) expect: Angry people, honking, and potential rear ends.