This is why when I have to drive somewhere I don't know,
I make a point of looking at some online map and taking
a printout of the area with me.
It's been on the news any number of times that the number
of GPS systems is far more than what the satellites were
built to handle.
It happened to my parents once that 1 intersection from
their destination, the GPS wanted them to turn left, go up
a small mountain, go down the other side and come back
all the way around.
Fortunately a little way up the mountain they stopped and
asked for directions.
I left from the bank and didn't have the opportunity of making a map.
Ron, the GPS satellites don't "handle" ANY GPS "systems", they just broadcast and the "systems", GPS receivers, listen. GIve up FOX news.
Errors similar to those your parents and I encountered are artifacts of the navigation software and the map data base. Some years ago in Fort Lauderdale, Florida, the system in my brother's rental wanted us to turn right, the problem is that we were in a tunnel under the street we needed to be on.
The system has other problems, too. It's hands free but one must know exactly what to say at each step. For instance after saying the command "navigation" and getting a response I say "destination address". That puts me on the Destination page where there are several options. Then I say "Address" and the system chides me and gives a list of some available commends. The only correct command is "destination address" even though I'm on the destination page. I think that the developers were German.
For two days when started the car the Home" screen showed the preset radio buttons but with no annotation.
It's as though MS wanted to get foot hold into vehicles and quickly cobbled together software glue to connect to the entertainment devices, hands free phone, and navigation. I's more like a beta release than a product.