Yesvantpur–Kamakhya AC Superfast Express
The 12552 / 51 Kamakhya Junction–Yesvantpur Junction AC Express is a Superfast Express train belonging to Indian Railways – Northeast Frontier Railway zone which connects cities Bangalore the capital of Karnataka and Guwahati the capital of Assam, that runs between and in India. It operates as train number 12552 from Kamakhya to Yesvantpur Junction and as train number 12551 in the reverse direction, serving the 7 states of Assam, West Bengal, Bihar, Odisha, Andhra Pradesh, Tamil Nadu and Karnataka. Coaches. The 12552 / 51 Kamakhya Junction–Yesvantpur Junction AC Express has 1 AC 1st Class, 4 AC  2 tier, 11 AC 3 tier & 2 End-on Generator Coaches. In addition, it carries a pantry car . As is customary with most train services in India, coach composition may be amended at the discretion of Indian Railways depending on demand. Service. The 12552 Kamakhya Junction–Yesvantpur Junction AC Express covers the distance of in 52 hours 25 mins averaging and in 53 hours 30 mins as 12551 Yesvantpur Junction–Kamakhya Junction AC Express averaging . As the average speed of the train is above , as per Indian Railways rules, its fare includes a Superfast surcharge. Routeing. The 12552 / 51 Kamakhya  Junction–Yesvantpur Junction AC Express runs from ASSAM WEST BENGAL BIHAR ODISHA ANDHRA PRADESH TAMIL NADU KARNATAKA Reversal. It reverses direction of travel twice during its run at and MGR Chennai Central . Traction. 3 locomotives are assigned to this train due to the entire route yet to be fully electrified. A New Guwahati-based WDM-3A hauls the train from Kamakhya Junction up to handing over to a Santragachi-based WAP-4 until after which a Lallaguda or Erode-based WAP-4 locomotive powers the train all the way up to Yesvantpur Junction .