Near my home there are several intersections with bike lanes, and I estimate that perhaps one driver in 10 enters the bike lane to make the right turn as they are required to.
In fact, I sometimes get surprised or even dirty looks from drivers making illegal right turns when I do move into the bike lane to make the turn. I guess they think I'm trying to get ahead of them and cut them off, but I'm not, I'm simply following the law and improving bicycle safety.