He meant the private ones from other states and far places. Those buses from TPJ, MV, TJ are operated by government only. The main problem here is, we have got an excellent road infrastructure. Since you can get buses to anywhere at anytime from any place, railways is not interested to introduce any trains on those routes even though the tracks lie unused. SR mainly concentrates on MS-VM- TPJ- MDU- TEN- CAPE line and MAS- SA- ED- CBE line in Tamil Nadu as they are the most profitable routes in TN.