Quote Originally Posted by osiris4isis View Post
If you have reliable internet connection via cell service, it's best to keep the distance of collecting TMC to small as possible (if you collect 50km worth of data, by the time you get to it the problem could be over) TMC can be from users reporting and they could be *cough* wrong.
Hmmm. i am a bit sceptic, sorry.
Some weeks ago I passed a certain point within 20-30 minutes. On the way up, no report and no jam. On the way back a reported jam on the same spot. However in reality: no jam! Trustworthy information would mean more than one user reporting. Right?

Quote Originally Posted by osiris4isis View Post
HSP is attempt to use data from user history of driving in order to get more accurate routing. For example, if a street normal speed is 45 but it's under construction so effectively it's only 20 (because that's the speed that it compute when you drove), then routing would know to give more accurate time it will take if that street is choosen.
I don't think that is the purpose or the accurateness of the maps are that quick renewed. I think what you are describing is more like TMC. Unless the HSP/FSP is renewed often enough and the construction works have a long time to finish. If it are short time works, it would have no use to make changes to HSP/FSP
I think HSP is more like a certain route is at certain time of day (rush hour) blocked during workdays, not in the weekend. So the route is different depending on the day of the week and the time. This would correspond with my experience (see higher)

Quote Originally Posted by osiris4isis View Post
IHNR uses routes that are more "effective" from major cities; for local routing, I don't think it matter much. But for routing across states/countries it could help. For HNR to work correctly you must have all the relevant states and countries map data and .hnr files.
I agree here.