How do Sat nav systems determine the route to take?

sat nav
Julian K asked:


I understand that there are 2 main players in the sat nav mapping market, Navteq and Tele atlas. Are they also responsible for determining which is the fastest route, shortest route etc. I have tried a number of sat navs and some routes are much more preferable to others. If I found out the drivers I could look for this when buying a new sat nav. Cheers

PDA insurance

One Response to “How do Sat nav systems determine the route to take?”

  • RIGGS® says:

    no,misconception,its the longest route,and the shortest route,the latter also states that the shortest route is not always the fastest one???