TomTom 2015 BRIDGE, Reference Manual

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Recording and sharing routes
About routes and tracks
The term "route" includes two types of path from one place to another:

Routes have a beginning and an end and, optionally, some stops in between. Your device
calculates your preferred type of path between all these points, for example, the fastest or
most economical. You can edit a route by, for example, adding stops or moving the starting
point. Routes can be imported but cannot be exported from your device.

Tracks also have a beginning and an end but no stops. Your device however has a fixed
map-dependent path between these points and your device sticks to this fixed path as much as
possible. You can only edit tracks using tools such as Tyre Pro. Tracks can be imported and
exported from your device.
Tip : Tracks have a dotted arrow!
About GPX and ITN files
GPX files (gps exchange format)
GPX files contain a very detailed recording of where you have been on your track, including any
off-road locations. GPX files become tracks after import.
Using GPX files
There are several things you can do with your GPX file:
 Use a tool such as Tyre Pro to view your track file.
 Export to a memory card or directly to your computer, then use your computer to view the file
using software such as Google Earth.
Note : While viewing your recording, you may notice that the recorded GPS locations do not
always correspond with the roads. This can happen for several reasons. Firstly, your device
tries to keep the files small and this can cause a slight loss of data precision. Secondly, your
device records the actual data from the GPS chip for an accurate representation of where
you’ve been, rather than what you see on your screen. Thirdly, the software with which you
view the recording may have the maps misaligned.

Share the file with friends by exporting it.
Note : Tracks can be imported and exported .
ITN files (TomTom's own Itinerary file format)
An ITN file contains less detail than a GPX file. An ITN file can contain a maximum of 255 locations
which is enough to recreate a route accurately. ITN files become routes after import.