# Get mileage from transport

You can retrieve the mileage from a transport. There are two different sources of information you can use:

* the value filled by users of the web application
* the value computed from the data incoming from the telematic provider of the vehicle. You must have activated a link with the provider to do so.

The values are stored in the `segments` part. Here are the details:

* `origin_mileage` : Mileage of the vehicle at transport origin site (in kms). The value is provided by the telematic vendor.
* `destination_mileage`: Mileage of the vehicle at transport destination site (in kms). The value is provided by the telematic vendor.
* `telematic_distance`: Automatically computed distance from telematic data (in kms). It is equal to `destination_mileage` minus `origin_mileage`
* `distance` : Manually entered distance. If null, it takes the value of `telematic_distance` (in kms).

If the transport consists in more than one segment, add values from all segments to get the total distance for that transport. Note that different vehicles may have been used for the different segments.


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