Due to the ubiquity of mobile networking and mobile phones, it becomes an irresistible tendency toward interaction and personalization for the public information on existing networks. In this paper, we aim at real-time road information service and address a Personalized Traffic Information Service System. This system provides the functions of user-defined routing and road information messaging. The system can show the neighboring road information by integrating with location-based services. Besides, our system also has data delivery services, which can expand to vehicle devices, mobile phones and portable navigation devices in the future.