At these traffic lights with a green arrow sign, where should a vehicle stop before turning right?

When you see a red traffic light with a green arrow for turning right, the green arrow allows you to turn right despite the red light. However, you must still stop first. If there is a stop line (a white line across the lane), you stop at that line. If there is no stop line, you stop before entering the junction or crossing to ensure it is safe to proceed. This rule ensures that you give way to pedestrians and other traffic and only proceed when it is safe. You cannot just turn right without stopping first. Stopping is mandatory to prevent accidents and confusion at intersections.