Waze had a recent update that includes a HOV on/off option. It's under the Settings/Navigation menu. In the Maryland/DC/Virgina area, it works pretty well, and only dumps me on the HOV if traffic in the regular lanes is bad.
I have seen a motorcycle option (under Settings/Navigation/Vehicle Type) on Waze as well, but haven't used it. Yet. But warm weather is coming and Beastie is eager to stretch her legs...
Can't help with lane splitting - I've never lived in a place where it was a regular thing, and the one time I tried it, some jerk tossed a fountain drink at me as I went by.