@John Moore good question — the module doesn't do automatic TX power scaling out of the box. It's not doing any closed-loop RSSI-based adjustment on its own, so yeah, at 50 meters it's running the same output as it would at 5km.
That said, TX power is configurable through the firmware, so if you want to implement your own adaptive scheme you absolutely can — read the RSSI from the link, set thresholds, and step the power down when nodes are close. The AI Firmware Builder in the Dev Hub is actually decent for scaffolding that kind of logic if you don't want to write it from scratch. Describe what you want and it'll get you most of the way there.
For a fleet tracking use case like yours, honestly the power difference at short range probably isn't going to matter much in practice — the module is efficient enough that you're not going to kill a battery worrying about it. But if you're running a dense node network and want to reduce interference between nearby units, that's actually a better reason to dial down TX power on the close-range links than battery savings.
