Since 1988 a full scale dynamic route guidance and driver information system is in operation in the western part of the city of Berlin. Some 600 vehicles are equipped with infrared transceivers, on-board-computers and display unit. 240 intersections have installations of beacons which are connected to a central computer system. When passing a beacon the equipped vehicles receive navigation information which is presented to the driver visually and audibly. On the otherhand these vehicles record their travel times and report them to the cental computer system via the beacons. This information is used for updating the route guidance information. Besides the proof of the feasibility and the performance of the system, the field trial was designed such as to investigate the acceptance of the system by the drivers and to estimate the benefits for both, the drivers as well as the community. Special attention has been devoted to travel time saving and safety effects. (A)
Samenvatting