๐ค AI Summary
This paper addresses the core challenges of inaccurate and unsafe trajectory prediction for surrounding agents in dynamic autonomous driving environments. It systematically surveys mainstream approaches from 2014 to 2024 and proposes the first comprehensive taxonomy framework covering the entire technical stackโunifying definitions of input/output modalities, feature representation paradigms, and prediction architectures. Through comparative analysis of physics-based models, machine learning (ML), graph neural networks (GNNs), generative modeling (GANs and diffusion models), and multimodal fusion techniques, the study identifies six critical research gaps, including weak multi-agent interaction modeling and insufficient long-horizon generalization. The work clarifies methodological evolution trajectories and empirical performance boundaries, providing principled guidance for algorithm selection. Ultimately, it advances the development of next-generation trajectory prediction systems that are more robust, interpretable, and semantically grounded in traffic rules and human driving behavior.
๐ Abstract
As the potential for autonomous vehicles to be integrated on a large scale into modern traffic systems continues to grow, ensuring safe navigation in dynamic environments is crucial for smooth integration. To guarantee safety and prevent collisions, autonomous vehicles must be capable of accurately predicting the trajectories of surrounding traffic agents. Over the past decade, significant efforts from both academia and industry have been dedicated to designing solutions for precise trajectory forecasting. These efforts have produced a diverse range of approaches, raising questions about the differences between these methods and whether trajectory prediction challenges have been fully addressed. This paper reviews a substantial portion of recent trajectory prediction methods and devises a taxonomy to classify existing solutions. A general overview of the prediction pipeline is also provided, covering input and output modalities, modeling features, and prediction paradigms discussed in the literature. In addition, the paper discusses active research areas within trajectory prediction, addresses the posed research questions, and highlights the remaining research gaps and challenges.