Advance Level Examination. Annually, a number of other officers come up through the ranks and are promoted to rank of SI. The rank insignia for a sub-inspector is one star. Romania In the Romanian Police, subinspector is the lowest commissioned rank, below inspector, and corresponds to the former rank of police second lieutenant (see Romanian Police ranks''). Other police forces Royal Hong Kong Police Palestine Police (before 1948) Mossos d'Esquadra References Police ranks Police ranks of India Police ranks of Pakistan Police ranks in the United Kingdom Police ranks of Sri Lanka