Where do you enter the date?
Assume that I want to create alpine routes TODAY to be used in JULY? How do MapSource know when I will use the route?
Hi HMR. There was a bit of a discussion here
http://www.ukgser.com/forums/showthread.php?t=72360&highlight=Winter+closure
The problem was, that in alpine countries (Switzerland, France, Italy and Austria) MapSource (with CN8 but not with CS 7) has not been able to calculate the shortest route between 2 points if the shortest route meant crossing a pass with eventual winter closure. It calculated routes around mountain passes (instead of 'shortest routes') and the user had to force it over passes.
There was a bit of a discussion about that in German and Swiss forums between some outraged users and some expert users (like you) used to deal with the shortcomings (if they have seen them at all) and not understanding what the fuss was about because they had their workarounds.
What made it worse for me was that my Quest 1 (again only with CN8) was suddenly unable to route the shortest distance in the alps (clearly something you would expect) till the fix with firmware 4.00 came.
But, to answer your question, Mapsource does not know, does not need to know, but it will give now more choice how one wants the routing to be calculated (at least when this new version is working properly, which it is not yet!).
And then it is down to me, non expert GPS user, to check if that pass is open, to turn around at the latest if there is a big sign saying 'Furka Pass closed' for example, or keep on going into the snow and ice because I trust my GPSR more than that sign.