The thing is very simple. RSA is not a bad concept. The bad thing which makes RSA horrible is yard workers only. For their convenience the boards was written like this example: Tirunelveli <=> Chennai Egmore <=> Sengottai. If it was written like Tirunelveli <=> Chennai Egmore and Sengottai <=> Chennai Egmore; then the yard workers @ MS daily need to change the board front and back respective of the train. Before 2 years, All boards are in single destination only and @ MS I regularly saw workers changing the front and back of the board. To make this work less board was written like this double destination. This only makes passengers confusing about the destination. SR and Railway unions thinking about the workers flexibility only and not about the passengers.