mkc wrote:
and it apparently doesn't factor in that RVs are not permitted on any parkway in NYS...
The Lake Ontario State Parkway is an exception to that otherwise iron-clad rule. RVs and non-commercial trailers are permitted on it (provided, of course, they are not too tall). One big reason for that is the road was constructed, maybe among other reasons, to provide better access to a couple of state parks offering camping and boat launch facilities.
The LOSP is also in rough shape, with poor pavement conditions. I'm not particularly recommending it.