A common thing I see drivers in my city do is pull into the center turning lane and then merge into their intended lane when doing a left turn. It's super illeg

A common thing I see drivers in my city do is pull into the center turning lane and then merge into their intended lane when doing a left turn. It's super illegal afaik, but I see it done all the time, I've even seen police do it. Of course, the alternative to this maneuver is waiting a very long time until both lanes are clear before turning because the stroad you're turning left on is extremely congested (though not extraordinarily congested in my cities case)