Using the bus lane for turning depends on the intersection. Going South on Garfield to turn right on to West 11th, the right lane is for busses only. Same thing going North on Garfield to turn right on to 7th. 

Helpfully, LTD and the City did very little to make this obvious. Simply omitting "Or Right Turn" from the standard "Bus Or Right Turn Only" signs was devilishly clever .