  Aerial cargo transport is anticipated to play a pivotal role in the
distribution of goods within urban environments. The shift is propelled by the
surge in e-commerce, the imperative to deliver essential supplies to isolated
areas, and the growing demand for expedited and more accessible deliveries. Our
research introduces a quantifiable standard for defining routing restrictions
for Unmanned Aircraft System Traffic Management (UTM) using the concept of
repulsive potential fields. Furthermore, we propose a scalable infrastructure
that facilitates collaborative routing of cargo Unmanned Aerial Vehicles (UAVs)
by independent shareholders. The practicality of the infrastructure is
validated through a functional prototype implemented at a national scale.
