In order to cope with challenges in road transport, physical developments or public improvements could no longer be the only solution. It requires the support of information technology. Information technology allows element in the road transport systems such as road, traffic light, message signs to be intelligent with the aid of computer technology (microchip and sensor) to communicate with each other via wireless technology. The aim of our research was to develop a vehicle warning system to improve road safety and evaluate its message delivery performance by making a comparison of the result of OLSR and BATMAN-adv routing protocols. This system consists of communication systems between vehicles using wireless IEEE 802.11n integrated with Raspberry Pi and provided the program to send and receive messages. The result obtained in this research is a prototype vehicle warning system that allows each vehicle within a specific range can exchange information.