A Novel Real-Time Traffic Information Collection System Based on Smartphone

The traffic information collection system is the underlying part of the intelligent transportation system. In this paper, we propose a novel real-time traffic information collection system, which recognizes driving status, detects the driving route, and updates the traffic condition accordingly. Specifically, we first model the roads as a virtual map, and then based on which we design a lightweight road topology relational database. Secondly, taking advantage of accelerometer and compass on the smartphone, we propose a lightweight driving status tracking algorithm that can accurately recognize users driving status. Finally the sensors readings is considered along with users driving status and the database to give real-time automatically route recognition. Meanwhile, in order to get accurate real-time information as well as protect users privacy, users driving speed is calculated in real-time manner and the encrypted driving route results are uploaded to the server. Experiments results show the effectiveness of our system.