As far as abbreviations go, I'm assuming NY uses SR- for the state routes. Check it over here https://www.waze.com/editor/?zoom=4&lat ... TTTTTTTTFT
The area from Lewiston's malfunction junction down through Niagara Falls has had its SB lanes converted to a bike trail, and I'm pretty sure without even looking that the base map didn't account for this, so that will need to be fixed as well.
As the exits are un-numbered, I do what I do on my side of the river, and use "Exit to ..." wording, which was a suggestion I picked up in the wiki.
The Parkway is a prime example of Robert Moses' vision of freeways and parks everywhere in New York. As you can tell by the graded-but-unutilized areas for ramps, it was intended to go further east, but the road is so underutilized as it is (see: bike trail) it's doubtful it will ever make it.

