The use of cellular phones in cars offers a number of possibilities, but represents also a real danger while speaking, and especially while dialling the number of another subscriber. The number of cellular phones in cars is growing constantly, as unfortunately also the number of traffic accidents caused by the use of cellular phones while driving. This was the reason for studying the possibilities of hand-free dialling, e.g. by using speech only. This requires a high level of speech dialling recognition, which is provided by the application of neurone networks. The paper describes the operating principle of such a system, SPRED. Besides, the legislative regulations are also considered regarding the use of cellular phones in cars in certain countries.
