As a driver in America this means that turning left/right on green means there could be pedestrians directed to cross the road, wonderfully obscured by your car’s frame.
In most of America that I’ve driven except NYC and Washington DC IIRC, you are allowed to drive right if the traffic light is red, if there are no cars coming.There may be pedestrians crossing in front where easily visible but they’re not being told to cross around the corner where they’re not visible.