MORE than 30 extra ambulances and 10 motorcycles are needed for 95 per cent of emergencies to be reached within the recommended 10 minutes, legislators were told yesterday. Director of Fire Services Peter Cheung admitted the percentage of calls reached within the target time had dropped in the past few years. He said an unexpected increase in demand was the major reason. At a Legislative Council Health Services Panel, Mr Cheung said the percentage had dropped from 92.5 per cent in 1993 to 89.5 per cent last year. The demand for emergency services had increased by 9.8 per cent a year. Members asked why the target was not calculated from the time of receiving a call rather than, at present, the time the ambulance set off. Mr Cheung said it took one minute to answer the call and confirm the address. There was no information on the time needed to find an ambulance. He said consultants brought in to study the service had warned that 'one should not learn how to run before one learns how to walk'. The priority was to meet the target of responding to calls within 10 minutes. Government officials said there was no timetable for when the extra vehicles could be provided, and it would depend on how much money was available.