I would like to rectify ur statement that it will take 20 to 30 years to lhbfy all trains in india.it will take 5 to 6 years only as no of lhb rakes production has drastically increased .more over i think investment in upgrading icf coaches are pure waste of money. Because one is getting neither speed nor safety nor comfort. I bet these icf coaches will return to its pathetic form in just 1month. It will be better if railway stops wasting money in upgrading these icf rakes but rather use it in production of more and more lhb rakes