I believe they do use regenerative braking, yes. I say that because I ride BYD busses on a regular basis, and (especially on older models, which are not as smo

I believe they do use regenerative braking, yes. I say that because I ride BYD busses on a regular basis, and (especially on older models, which are not as smooth) you can feel (what I think is) the jerk of regenerative braking kicking on.