Apparently there are no national standards for striping HOV lanes and therefore states are all over the board. Further complicating matters, some states aren’t even consistent within their own state. I noticed a thread here or on Reddit that mentions CA has a yellow stripe some places, all white elsewhere. And of course they have designated entry/exits some places.
Here is AZ we mostly have a single, solid white stripe but on some older HOV lanes there at least formerly were double, solid white stripes. Not surprisingly EAP apparently has treated the AZ markings differently over time. Now it seems the solid white line Is treated like a barrier.
It will be interesting to see how future releases of EAP treat these inconsistent HOV striping standards. I suppose eventually the EAP software can be adapted to all of these markings. I realize it isn’t a huge issue but if lane changes into and out of HOV can be handled by EAP and NOA, so much the better.