2007-11-25 21:53:41 · 7 answers · asked by lucy 4 in Cars & Transportation ➔ Car Audio
They all use the same algorithm to determine their location, however, they do all calculate the best route slightly different than others. For the most part they should all be the same assuming you are calculating by quickest time (there are usually settings to change calculation prefrences). The maps are all different, with varying POIs, but as long as you stick with Garmin, TomTom, or Harmon/Kardon, you shouldn't have too many problems. Magellions tend to have trouble in the mountains, the Navigon system was some of the worst reveiws I've seen on GPS units, Cobras are useless, Mio's are decent, but you have to cautious becuase not all Mio's are the same, a c320 is not he same map system as a c720.
2007-11-26 05:10:39 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The actual GPS chip is probably the same in all. However the map data and the routing software will be different. The general route should be the same with all units but there may be detail differences, for example TomTom is reported to take you over a motorway flyover rather than holding on to the main road if it thinks it saves a couple of yards.
2007-11-26 01:18:53 · answer #2 · answered by The original Peter G 7 · 0⤊ 0⤋
Each sat nav developer uses a slightly different algorithm to work out the route. Also different Nav systems use map data from different suppliers. Therefore you may get different routes from different makes. Although having said that the chances are fairly small. Tomtom's route planner can be a bit erratic, Navigon's is OK and the VDO one is excelent.
2007-11-25 22:03:37 · answer #3 · answered by chris t 3 · 1⤊ 0⤋
Great question. I honestly don't know. I have used 2 x different brands of Sat Nav but on the rare occasion I repeat a journey they always take me the same way.
2007-11-25 21:58:54 · answer #4 · answered by Anonymous · 1⤊ 0⤋
All Sat Nav's work the same, connecting to three or more satellites, to gain your position, then you have the choice of the shortest, faster or longest ways. I have used different types and basically they work the same, some have more extras than others. IE hands free for your mobile via blue tooth, Speed camera warnings, Wi-Fi hot spots and so on.
2007-11-26 03:42:52 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Different devices can have different chips in their receiver.
Older chips are slower to lock on to the signal and can only simultaneously track a smaller number of satellites.
However, as written above, routing is only related to the software and the maps.
2007-11-26 02:25:00 · answer #6 · answered by Matt 5 · 0⤊ 0⤋
not to sure but one day me and my bf were hungry and we were in the lakes it was about 9pm. we put in the next McDonald's or restaurant and we ended up in a middle of a field lol it was sooo funny. we just eat when we got back to the caravan and had what was in tins beans on a plate cos all shops were closed lol.
2007-11-25 22:03:05 · answer #7 · answered by shell 5 · 1⤊ 0⤋