Why would you spend all that money to make Bus and Bike lanes that are useless? And why are bike/bus lanes supposed to cover this lack of planning?
Figuring out where the taxis and cops are supposed to stop should've been done before any of this was implemented. For them to just say "we don't have room, so we'll take yours" is disrespectful and clearly causing a major traffic issue. So to answer your question of where cops and taxis are "supposed to stop" the answer is "anywhere else that's legal", and not just assume that bus riders should eat their time cost for being lazy.
I know in Phoenix (and maybe all of Arizona) a taxi/limo/livery vehicle can load and unload anywhere it isn't specifically prohibited. Driving lane, bike lane, whatever.
The cops just stop wherever they want blocking traffic during rush hour or not they don't care. Hell, they closed down one of the highways for a couple hours in the middle of the week around lunchtime for a funeral procession for some fallen officer just because they can.
Figuring out where the taxis and cops are supposed to stop should've been done before any of this was implemented. For them to just say "we don't have room, so we'll take yours" is disrespectful and clearly causing a major traffic issue. So to answer your question of where cops and taxis are "supposed to stop" the answer is "anywhere else that's legal", and not just assume that bus riders should eat their time cost for being lazy.