u/Calm-Ad4327

Some intersections have a traffic light with a straight green arrow like this. For this example there's another traffic light with a solid green on the left, with this straight arrow light being on the right. I'm not sure if turning right here would be banned or not, there's even a truck doing it in the third picture. There's no signage or anything else indicating a right turn is banned and as far as I can tell there's no real reason it should be. If it's allowed then what's the point of having a straight green arrow instead of a regular green?