3 ptsPTOfficial number: 6953
Does this sign inform of a approaching a junction, where the tram induces a phase dedicated for it?

Explanation
Correct answer: Yes
Sign AT-5 "vehicle-actuated traffic signals" indicates an approach to a junction where the green signal for vehicles on the intersecting road is activated by an approaching vehicle. This mechanism is often used for tramways, where an approaching tram triggers a green signal for itself.