Why are GPS units so much trouble.
I bought a Garmin Nuvi 5 or so years ago that worked most of the time,but occasionally went beserk.On our Christmas trip to South Carolina,it routed us one way going south and another way going north....
Forum Discussion
There are two companies that supply the data that is used on all the navigation units in the world and they rely on people driving around and taking notes. Sometimes things are missed. A bridge in Costa Rica shows as yet to be built but it has been there for 50 years. There is a bridge in California that has been around for 70 years but it was not in the database on my 2001 Mercedes and the navigation system was directing me to go 200 miles out of my way as a result.
There is the old computer tech saying "garbage in, garbage out" and I see it in effect all the time. To trust a computer is to trust the people behind it and that is never a good idea to do blindly.
What I like about the Google Maps routing is that I can take a section and move it around as it will take me the shortest route and that is often through an area I wish to avoid. The nav systems also do not factor in day of the week or time of day and that can make all the difference in the world as to which route is the fastest one through an area.
There is the old computer tech saying "garbage in, garbage out" and I see it in effect all the time. To trust a computer is to trust the people behind it and that is never a good idea to do blindly.
What I like about the Google Maps routing is that I can take a section and move it around as it will take me the shortest route and that is often through an area I wish to avoid. The nav systems also do not factor in day of the week or time of day and that can make all the difference in the world as to which route is the fastest one through an area.
