RFID model is one of foundational and core models in Internet of vehicles simulation. Previous traffic simulation models can't meet with the demand for Internet of vehicles such as Wireless communication and cooperative interaction, and lack of RFID model. This paper presented a reader model and a electronic tag model of RFID system based on the agent principle, including their agent structure and implementation. Based on automaton theory, an automaton for different data frame format of different communication protocols was given to unify the heterogeneous data processing during the communication of reader, tag and computer. As an example of the model application and verification, it developed a simulation system of reader locating of RFID traffic data collection with VC++ 2010. The result indicates that RFID models approximate physical RFID device better, and build the foundation for Internet of vehicles simulation system development.