-Minimum security institutions: These are composed of inmates who are close to their release date, incarcerated for non-violent crimes, or those who have proven themselves to be extremely reliable and trustworthy.
Minimum security institutions: Dito nakakulong ang mga bilanggo na malapit nang palayain, nakulong sa mga krimen na hindi gaanong marahas, o sila na napatunayan nang mapagkakatiwalaan.