Radar based highway safety warning system

Radar/laser detection device with multi-sensing and...

Radio frequency highway management system

Radio frequency identification tag and a method of operating...

Receiver for traffic messages

Receiver for use in a remote keyless entry system and for receiv

Reflectivity measuring apparatus and method

Relative visibility measuring process and device

Retrieving and presenting dynamic traffic information

Road map displaying system for automotive vehicle

Road obstacle monitoring device

Road safety installation with emission of sound messages

Road situation perceiving system

Road traffic congestion display system

Road traffic weather-monitoring system and self-luminous...

Road-condition informing apparatus and road-condition...

Road-to-vehicle communication system, road-to-vehicle...

Route guidance display device