Car Information Systems provide information from inside
and outside the vehicle to the driver. Nakamura, et al. [3]
describes the ITS (Intelligent Transport Systems) Car
Information System as a concept of information providing a
service center to vehicles. The idea was to install an information
processing system in a car which would provide information
services to the driver from various types of exchanged
information between systems inside and outside the car via
telecommunication and broadcasting. Most systems involve
calculations of vehicle locations using GPS (Global Positioning
System) and displays the position of that location and the
destination with electronic maps. Also, the system employs
a variety of outside services to provide traffic information
such as the telecommunications, broadcasting and an
in-vehicle data bus to allow the exchange of information
among various devices inside and outside the car. At the same
time, it also offers some additional information services to
the driver as well. Figure 1 shows the concept of the ITS Car
Information System.