sketch wrote:That doesn't explain why the three routes given* are
Of course the first alternate should be US-212 - 328 mi - 5 h 21 m (est), but it's not available because of the mH bit in the middle. Instead because of the lack of other MH+ routes we are given two entirely non-viable alternates.
- I-90 - 372 mi - 5 h 17 m
- I-94 - 532 mi - 7 h 45 m
- I-25 - 535 mi - 8 h 4 m
I wish I had a better answer for you on this one. All that I can tell you is using the modified FC in the SC counties along my route from Charlotte to Florida It did route me on mH after the time frame made sense. Meaning to me the freeway route finally ended up taking longer than staying on the primary/mH. Now the time difference between the two routes in the perfect world is about 10-15 minutes. So for the first 10-15 minutes that "I" deviate from the course it does try to route me back on to the freeway. I am thinking that every time I hit the server on a reroute that it falls into that consider every road within the 5 miles of origin or destination rule. Of course maybe I just beat the routing server into submission where it throws up his hands and say "ok, ok, you know better". I doubt that very much.
Now if you type my NC to FL route into livemap, I am pretty confident that in no way will you get the route I take as an option. But that could be because I have more Freeway and Major Highway choices on that trip then you would get in the West.