THE expanding transport links which will feed and sustain the economic development of the Pearl River Delta will be highlighted at the Expo 2001 transport pavilion. Visitors will find explanations of existing and future transportation systems and equipment, discover the seven types of buoys used in the harbour and see a hi-tech parking metre, operated not by coins but by a card similar to those used on the Mass Transit Railway. Key exhibits will be provided by the University of Hong Kong and Government departments, but commercial exhibitors include transport industry names such as Sheung Tak, Hopewell, Hong Kong Ferry Co, Kowloon-Canton Railway (KCR), Kowloon Motor Bus and theMTR. At the heart of many exhibits is the theme of regional growth. ''The number of people travelling between Hong Kong, China and Macau has increased dramatically since 1989, necessitating increased fast ferry services,'' said Gabriel Tong Ying-lun, spokesman for the Marine Department. Growth will continue and the number of China-Hong Kong passengers using the department's two ferry terminals is expected to reach 14 million a year by 2005, up from 5.2 million last year. Hong Kong-Macau traffic will reach 20 million a year by 2006 - up from 14 million last year. KCR spokesman Rowena Ho Kim-hong, said the KCR planned to renovate Kowloon Station in Hunghom to bring it up to the international standard appropriate for a station used by large numbers of tourists and China traders. New facilities will also be added to the border station at Lo Wu. Growth is also forcing both Hong Kong and Macau to reclaim land from the sea. Continuing reclamation work in Hong Kong harbour, will inevitably shrink Hong Kong's 1,826.26 square kilometres of territorial waters, but anchorage points used by vessels will not be affected. The anchorages, together with navigational points and the main sea routes, will be displayed at the exhibition. The Marine Department will also be introducing its Ma Wan Current Monitoring System and will demonstrate how this computerised network is used by controllers at the Vessel Traffic Centre to provide pilots with a continuous update of information about tidal flows and depth. ''Without such a monitoring system, considerable experience is required to guide large vessels through the channel, especially during periods of peak seasonal flow associated with Pearl River run-off,'' Mr Tong said. Another innovation, provided by Hong Kong University's Civil and Structural Engineering Department, working in conjunction with Beijing's Tsing Hua University, is the creation of a bridge vibration monitoring system. ''The monitoring system is very important as it shows how a bridge reacts under different situations - from normal traffic flows to emergency situations, such as when a typhoon or earthquake strikes,'' Hong Kong University's Dr Pam Hoat-joen said. Work began in July, with the model bridge being constructed on Hong Kong side and with Tsing Hua supplying the computer software. More importantly for regional growth, the turn of the century will see key parts of Hong Kong's $167 billion airport completed. The Lantau Fixed Crossing, consisting of two bridges - one of them the world's longest suspension bridge carrying both road and rail traffic - and a viaduct, is due for completion by mid-1997. Macau's airport, which is costing $7.1 billion, will also be completed by then, along with corresponding road and rail links to China.