2000 A:D

The analogue versus digital debate continues, but often centres on whether one should replace the other. The real question is how far both types of system are needed, so that the big manufacturers continue to make equipment for both markets. This article discusses some of the implications for public transport. Critical to its success is its ability to transport passengers to the right destination in the scheduled time, reliably and comfortably. Tailored trunking services provide an economical and efficient method of communication between buses, trains, route controllers, and depots. They enable drivers to inform passengers of possible delays and possible alternative connections in the event of late arrival. The Nokia actionet system and radio terminals support such rapid communication and can make emergency calls where passengers may be in danger. A dispatcher handles routeing and scheduling of buses and trains, and MET has developed a computer-based public transport dispatching application, which has been integrated with Nokia actionet systems and on-board computers in buses and trains in Germany. Communication can be improved by a special functional numbering feature, and assist public transport priority in bus and taxi lanes. TETRA digital technology has several advantages over the analogue MPT 1327.