The Southern Railways are working to bring the ultra-fast Talgo coaches to the south and connect the 360km train route between Chennai and Bangalore. If all goes according to plan, the present set of tracks are enough to make the interstate commute in three hours or less.
The Indian Railways has already tested the Talgo coach in two corridors — between Delhi and Mumbai, and on the Mathura - Palwal route. The train is capable of reaching speeds between 130km/h to 180km/h. The current duration between Chennai to Bangalore on the Shatabdi Express is four hours forty minutes.
The Talgo coaches are light, owing to its aluminium construction, and also boasts superior suspension, that allows it to corner faster. This feature is important because the Chennai - Bangalore route has many corners.
In December 2014, high speed tests were conducted in an inspection coach on the Chennai - Gudur and Chennai - Arakkonam lines. Despite its success, it never went public. The tests were carried out at a speed of 130km/h and the tracks supported the speed, which means possibilities are high.