Abstract: To solve the problem of precise positioning of vehicles in the vehicle road coordination system, this paper tests and analyzes the vehicle positioning terminal system with the MT2503 chip as the core. Through the processing of signals from satellite systems and frequency bands through the vehicle positioning terminals of BeiDou/GPS and GPRS, high-precision position calculation and speed measurement are achieved, providing high-precision navigation information. By collecting multiple sets of GPS monitoring data from test vehicles in different locations and environments, and analyzing the experimental data, it was found that the accuracy of GPS monitoring data varies in different locations and environments. However, through debugging and testing, the conditions for vehicle information fusion can still be achieved in the vehicle road collaborative system.