MAA for RNAV routes
 

Does anybody know why some RNAV routes have Maximum Authorized altitudes? In this link, the MAA's are below 10,000ft. Why?

SkyVector: Flight Planning / Aeronautical Charts

Those T-routes usually circumscribe class Bravo airspace (like in your example). I always thought they put MAAs because they wanted to keep people on those routes while not having them get in the way of the arrivals and departures from the main airport. There is one around ORD that also has MAAs and I think it is for the same reason. MAAs for victor airways usually have to do with signal interference and I dont think that is the case here. I could be wrong though.

Yeah it's all airspace considerations there. Here's another one minus the MAA (and nowhere near any airspace).

SkyVector: Flight Planning / Aeronautical Charts