CMB drivers say the allocation of 12 routes to Citybus is threatening guarantees of job security. Bus unions yesterday demanded the routes, to be absorbed by Citybus when CMB's franchise expires in August, go to open tender to ensure the new operator can cover costs and employ as many former CMB staff as possible. Transport authorities have given assurances that CMB staff will be given priority for positions in the company which wins the tender for the 88-route package. But union spokesman Alex Leung King-yue said the 12 routes should be put back into the main package to ensure fair competition. He said allocation of the routes to Citybus would give the company a monopoly on services between Siu Sai Wan and Western. 'We strongly oppose these 12 routes not going to open tender as these are some of the most profitable ones,' he said, particularly routes 788 and 780 from Central to Siu Sai Wan. Mr Leung said about 10 routes within the 88-route network reduced the profitability of the overall package because they catered mostly for students and weekend day-trippers. A Transport Department spokesman said only three of the 12 routes to be absorbed were profitable and the purpose of the allocation to Citybus was to streamline services. The number of complaints received by the Transport Advisory Council dropped 15.6 per cent to 3,133 in the last quarter of 1996. But complaints about CMB rose 20.9 per cent from 167 to 202. There were also more complaints against ferry services, up from 30 to 52.