In this situation, does the traffic light prohibit you to make a U-turn at this intersection?

The general traffic light S-1, displaying a green signal, permits entry into the junction and does not prohibit U-turns. This manoeuvre would be prohibited if a B-23 'No U-turn' sign were placed under the traffic light, or if a directional traffic light S-3 without a U-turn arrow were used. It is important to remember that when making a U-turn, you must give way to vehicles approaching from the opposite direction.