THE MTRC is losing millions in revenue as cross-harbour passenger figures fall and belt-tightening commuters save dollars by taking buses. Revenue in the past financial year fell by about $15 million, possibly the result of increased competition. The corporation said the daily average cross-harbour patronage in June was 834,000, compared with 908,000 for the same month last year - a loss of almost 5,000 passengers a day. In the year ending June 1998, revenue for the entire system fell to $2.526 billion from the previous year's $2.541 billion. A Mass Transit Railway Corporation spokesman said the drop could be related to fewer cross-harbour passengers catching trains, as average patronage for the entire cross-harbour transport system had stayed fairly constant. 'The Western Harbour Crossing opened in May last year and bus operations have become smoother, so it is possible more commuters may be choosing them to cross the harbour,' she said. Commuter Cheung Hieu-duong said he could save more than $10 a trip by taking buses from his Tung Chung home to work on Hong Kong Island. 'It is too expensive to travel on the MTR to cross the harbour, therefore I would rather spend 30 minutes more taking the bus,' he said. Fellow traveller Ngai Ka-kin said he preferred buses as they were cheaper and less congested. An MTRC spokesman said the Nathan Road corridor was still congested at peak times. 'Perhaps some people are choosing other transport means during the off-peak hours,' she said.