Interaction-Aware Trajectory Prediction of Connected Vehicles using CNN-LSTM Networks
This work addresses trajectory prediction for autonomous vehicles in congested scenarios, but it is incremental as it builds on existing methods with a focus on interaction modeling.
The paper tackles predicting future trajectories of vehicles in congested traffic by modeling interactions with surrounding vehicles, using a CNN-LSTM network, and reports improved performance with lower root-mean-square error on the NGSIM dataset.
Predicting the future trajectory of a surrounding vehicle in congested traffic is one of the basic abilities of an autonomous vehicle. In congestion, a vehicle's future movement is the result of its interaction with surrounding vehicles. A vehicle in congestion may have many neighbors in a relatively short distance, while only a small part of neighbors affect its future trajectory mostly. In this work, An interaction-aware method which predicts the future trajectory of an ego vehicle considering its interaction with eight surrounding vehicles is proposed. The dynamics of vehicles are encoded by LSTMs with shared weights, and the interaction is extracted with a simple CNN. The proposed model is trained and tested on trajectories extracted from the publicly accessible NGSIM US-101 dataset. Quantitative experimental results show that the proposed model outperforms previous models in terms of root-mean-square error (RMSE). Results visualization shows that the model is able to predict future trajectory induced by lane change before the vehicle operate obvious lateral movement to initiate lane changing.