The traffic estimator itself is mostly local, but the package ships under-disclosed geocoding, download, and credential-management code, including a hardcoded Earthdata login.
Review this package before installing. The main traffic-estimation command appears to process local or synthetic imagery, but the shipped helper code has broader authority than the documentation says. Do not rely on the embedded Earthdata credentials, avoid entering sensitive place names unless remote geocoding is acceptable, and prefer a version with the unused credential/download helpers removed, dependencies pinned, and vendored metadata corrected.