LUCKNOW: Due to high ticket pricing in premium trains Indian Railways has decided to rationalize the dynamic fare system by starting a slab system. It will allow people to book premium train tickets from reservation counters and providing a window of 30 days for advance booking instead of 10 day at present.Premium trains come with dynamic pricing where price of the ticket is linked with demand.Premium trains were introduced to accommodate plans of last minute travellers. The trains were launched during the fag end of UPA regime by the then railway minister Malikarjun Kharge.But it has been observed that prices sky rocketed with increase in demand and at times fare of 3AC was more than 2AC. Ministry, therefore, has decided to do away with the demand based pricing and have a slab system, whereby, fare will remain same for a particular number of seats despite increase in demand. The facility will be available from July 1.Besides, premium trains will now be called Suvidha express.