The key to successful lane-change maneuver detection with navigation system is the sub-meter accuracy for estimating the lateral acceleration. In addition, the precise point positioning technique (PPP) was applied for vehicle detection without needing a base station correction as the RTK technique (carrier phase, dual frequencies GNSS receivers) [6]. The precision level was relatively at the same level as the results from RTK solution in previous study5 without reference base station. It can be concluded that for detection of lane change maneuver the PPP solution was possible. Furthermore, with PPP the technique, all unsafe driving behavior could be detected.