The HOV lane the location is the left lane not meaning that it shall be the fastest lane . Ppl could drive HOV lane with the speed limit . It is totally different that drive leftist lane which fastest lane.
All lanes to the left are meant to be faster than the lane to the right. Obviously the HOV lane is meant to go faster that is the whole point. If your going slower why would you go in that lane? Its not a special lane to slow the flow of traffic.