JAIPUR: The warning sign had come in late March this year, at the fag end of the last tourist season. For the first time in its 34-year history, the royal Palace On Wheels (POW) had cancelled its trip after failing to find passengers.And from bookings or the lack of it, the new tourist season does not bode well for the heritage trains of Rajasthan Tourism Development Corporation RTDC ).Early this month, POW began the season with only 38 passengers, while the Royal Rajasthan on Wheels (RROW) has still not found any takers for its first trip, scheduled on October 2."The train is parked at Jaipur and is scheduled to commence operations on October 2. But, so far, there have been no bookings, at least for three tours. However, there is one trip booked in the last week of October. As for the rest of the season, there are no confirmations," a source said. The RROW, which can take a maximum 82 passengers and require a minimum 35 to make nominal profits, starts its journey from Delhi and goes to Jodhpur, Udaipur, Chittorgarh, Sawai Madhopur, Jaipur, Khajuraho, Varanasi, Agra and returns to Delhi.Last year, in peak December season, RROW had cancelled two consecutive trips after failing to attract tourists. The occupancy levels in both these trains had come down to 35-40% in 2014-2015, from nearly 60% and above in 2011-2012. This has happened despite RROW reducing the number of trips.