Yes AC buses are there and they run full! But the frequency of buses in distributed all through the day of 16 hours so ina block of 4 hours in morning or evening there are 4 buses of SRTC having capcity of 200 and 200 may be private sector. Occupancy ratio will be 90% and about 360 passengers travel. Will all these travellers shift to rail if a train is introduced is a demand supply requirement analysis and these travellers have different requirements and time zones. Moreover a train should be able to fill atleast 800-1000 travellers at a time.