For the safety & convenience of rail passengers, Railways have decided to replace the old 18 coaches conventional rake of train no. 12431/12432 Nizamuddin-Trivandrum-Nizammudin Rajdhani by the new LHB 16 coaches rake with improved seating capacity. The new replaced LHB rake of train no. 12431/12432 Nizamuddin-Trivandrum-Nizammudin Rajdhani Express will be on tracks from the 08-06-11 when departing from Nizzamudin and from the 10.06.11 when departing from Trivandrum.