This paper states our method using taxi trajectories in Hanoi, Vietnam during 4 weeks from September 18th to October 15th. In our method, Hanoi map is divided into the smaller regions with a predefined size. Next, we identify the contiguous regions where jams happen during different time slots and their correlations. Finally, we develop a model predicting taxi transportation flow in each region and the velocity basing on historical and weather data. | Detecting jam regions correlations and predicting taxi transportation flow and velocity