NINETEEN closed circuit televisions will be installed along Tuen Mun Road in the latest hi-tech venture to control traffic congestion. A new $24 million traffic surveillance system is due to set up along the highway linking Tsuen Wan and Tuen Mun by mid-1995. The system includes the installation of 19 closed circuit televisions along Tuen Mun Road to detect vehicle queues. Information gathered will be sent back to a police control centre in Tai Po and the Transport Department's area traffic control centre in Tsuen Wan. Motorists can learn about conditions through message signs. Assistant Commissioner for Transport Lee Shu-chee said the new system would enable the immediate detection of accidents.