i have seen multi agency raids out at the tulla holding rank involving vicpol ,sheriffs, VTD (TSC) , centrelink, and immigration, TSC check the general vehicle upkeep and uniforms are being worn, sheriffs check random people for unpaid fines, centrelink head straight to the african drivers to check their credentials (I assume they are the ones most likely to be working off the books while on benefits) and immigration form a beeline to the indians, I've seen them nabbed then and there and taken away pending deportation. Leaving the empty taxi on the rank for the owner to hopefully find out about and come and collect, gawd i larfed..
Vicpol just make sure everyone complies with all the other agencys.
Since i was above board allround i woulda been tempted to tell them all to get F ucked if they approached me, but strangely enough i may aswell have been invisible to them all..