Nearly half of the more than 3,700 complaints about public transport services in the second quarter of this year involved problems with taxis, the Transport Advisory Committee said yesterday. The 1,824 complaints - a 7.5 per cent increase compared with the same period last year - mainly concerned drivers acting in an 'other than civil or orderly manner' (440), refusing a hire (300), and failing to take the most direct routes (334). Complaints about franchised buses accounted for 839 cases, with Kowloon Motor Bus the source of more than half the complaints. Committee chairwoman Teresa Cheng Yeuk-wah said franchised bus operators had made a number of improvements since last year. 'There are more environmentally-friendly, air-conditioned and wheelchair-accessible buses.' She said buses had implemented or agreed to implement additional safety measures. These included enhancing safety of exposed seats at the front of double-decker buses, improving upper deck windscreens, fitting black boxes on buses and better working hours for bus drivers.