Recently PPP-RTK is one of the outstanding technologies to overcome the limitations of Network RTK. For PPP-RTK, the corrections of GPS error sources must be provided as state space representations. This allows the user to process GPS data in the real-time precise point positioning mode. In this study, we developed user algorithms for PPP-RTK and evaluated positioning accuracies assuming that the correction data provided in real time. In order to assess the positioning accuracy in the kinematic mode, we attached the GPS antenna to the moving vehicle and collected the measurements by using a dual-frequency receiver. The vehicle was drove at a maximum speed of 30 km/h. The estimated coordinates were compared with the relative positioning results computed by RTKLIB. We also analyzed how the individual accuracy of state-space correction message affects our solutions. In moving vehicle experiment, the total RMSE was 6 cm and the maximum error was under 10 cm including acceleration zones and curve sections.