VANETs are new emerging and challenging technology that makes an improvisation in traffic safety and efficiency. The constant growth of automobile industry is increasing the demand for car safety and the car to car connectivity. It creates a path for Intelligent Transportation System (ITS). The information that is carried by the vehicles can enroll safety measures. In this paper, the authors introduce a promising realistic vehicular mobility model and evaluate the performance of following routing protocols: AODV, DSR and TORA and OLSR. A variety of highway scenarios, characterized by the size of the network were simulated.