An overview of in-vehicle route guidance system

In-vehicle route guidance systems have seen great development in recent years. They have become an important tool in alleviating congestion in the urban transportation network. As a result of the advantages associated with navigation techniques and popularized digital maps, in-vehicle guidance systems are both economical and useful. In-vehicle route guidance systems are being accepted by more and more users, in many countries and for these reasons, research has focussed on improving their performance. The aim of this paper is to review related literature, classify and make a comparison among current advances in existing in-vehicle route guidance systems. Some of main components in the in-vehicle route guidance system and existing methods that have widely been proposed by researchers are investigated in detail. In face of significant research in this area, we point out certain work limitation, provide some comments, and also make suggestions for future work in this area