Centralized control of access for unique visitor types (visitor, full access, administration only, etc). When tied into a system of barriers, this becomes a fully automated access control system for the entire base or facility.
Limitations to be assigned to visitors on duration of stay, areas to be visited, and alert security of offenders.
Ability to monitor speed within a site which could be used for enforcement, or to identify visitors that may have stopped between checkpoints for some reason.
Historical data on all vehicles.