there is NG rout from Jabalpur to Balaghat in Madhya Pradesh which is still in use. Another one is Gwalior Sheopur Kalan rout. There are many NG trcks in the state of Gujarath and some of them are under gauge conversion. Kalka- Shimla and Jaiplguri - dehradun routs are aslo functioning now. Both will not be converted ever.