Adaptive geographic mapping in vehicle information systems

Advisory system for previewing local conditions on a highway

Annunciator system with mobile receivers

Anti-skid controller having accurate road surface detection capa

Apparatus and method for determing a condition of a road

Apparatus and method for processing and displaying traffic...

Apparatus for supplying traffic-related information

Apparatus for the transfer of information in motor vehicle traff

Automated data acquisition and processing of traffic information

Automatic gate control system for freeway interchanges

Automatic setting of variable speed limit

Autonomous highway traffic modules

AVI transponder with audio announcements means