Passengers could become 'traffic police' to help prosecute speeding minibus drivers under a plan floated by police and transport officials. The latest twist in efforts to cut the rate of minibus crashes comes as officials consider requiring all minibuses to be fitted with speed display alarms to alert passengers when drivers are speeding. Police and the Transport Department were considering a scheme whereby passengers could report speeding drivers, Chief Inspector Chau Ying-yuk, of traffic branch headquarters, said. 'We have difficulty in prosecuting speeding public light bus drivers even if passengers notice that the driver is speeding from the displayers,' Mr Chau said. 'We would hope that if any passenger spots that the driver is speeding, he or she can report to us and we can use it as an evidence for prosecution.' At present, the devices, installed in just 500 of the 4,300 minibuses, have only a deterrent effect. The Transport Department confirmed that the suggestion, described by Mr Chau as very preliminary, was under discussion. 'We have discussed it with the police and the industry. So far, we have no timetable,' a department spokesman said. Leung Hung, chairman of the Public and Maxicab Light Bus Merchants' United Association, said it welcomed the suggestion. 'If a driver is speeding, he deserves to be prosecuted. If he is not caught by passengers, he would probably be caught by police, there is not much difference,' he said. Leaflets emphasising the importance of road safety are to be delivered at minibus stops this week. Police will step up enforcement in a three-week campaign, Mr Chau said. In the first 10 months of this year, 904 accidents involved minibuses, an increase of 15.3 per cent on the same period last year. This compares with the total number of traffic accidents in the first 10 months of this year, which stood at 12,403, a rise of 4.1 per cent.