Depends on the local law. In some cities, this is bike-legal, and even officially encouraged as "indirect left turn": see the side-street bike box, intended just for this: on your green, you cross the side street, turn right-then-left into the box and wait for a green signal to cross the main road. https://prahounakole.cz/wp-content/pnk/uploads/2013/03/pruhy...