No need of all these stuffs .The train can start CST at 20:00 pm to reach Mangalore earlier.That makes on time departure of train from Mangalore and 04:30 arrival at CST. RSA just makes the cleanliness bad . Instead of 22:00 just makes the departure time of train at CST to 20:00 . Morning 05 to night 20:00 is enough for primary maintanence of the train at CST