New Delhi: The Indian Railways has introduced several changes in its set up which it says will go a long way in making train journeys smoother secure efficient and transparent for passengers across the country. These changes have come into effect from May 1. Major changes include Holders of unconfirmed tickets or wait list passengers will no longer be permitted to enter sleeper or AC coaches of trains. Only those with confirmed tickets will be allowed to access the reserved coaches. Passengers with waiting list tickets will not be allowed to travel in sleeper and AC coaches. Those found with an unconfirmed ticket occupying a seat in reserved coaches will be asked to vacate the same by the TTE and a heavy fine would be imposed on that person before being asked to move to the general (UR) coaches. The Indian Railways cites its responsibility to ensure the comfort of passengers with confirmed tickets as the reason behind the rule change. Passengers will now have to use One Time Password (OTP) for every booking while reserving tickets beforehand. Registered users or otherwise every ticket booked via the IRCTC portal and app will now make use of OTPs. The security codes will be generated ahead of the users entering the payment gateway to ensure that a genuine passenger is booking the ticket. Starting May 1 train tickets can be booked only 90 days prior to the journey. Previously bookings were allowed up to 120 days ahead of the journey but this is no longer the case. This change is a precautionary measure to prevent travel agents from exploiting the earlier system. In case a train ticket is cancelled the refund process will be completed within two days. Earlier the process used to take five to seven days. However this will be applicable to online bookings and counter bookings directly linked to a bank account.