A Survey on Deep Multi-Task Learning in Connected Autonomous Vehicles

• URL: http://arxiv.org/abs/2508.00917v1
• Date: Tue, 29 Jul 2025 22:17:28 GMT
• Title: A Survey on Deep Multi-Task Learning in Connected Autonomous Vehicles
• Authors: Jiayuan Wang, Farhad Pourpanah, Q. M. Jonathan Wu, Ning Zhang,
• Abstract summary: Connected autonomous vehicles (CAVs) must simultaneously perform multiple tasks, such as object detection, semantic segmentation, depth estimation, trajectory prediction, motion prediction, and behaviour prediction.<n>Traditionally, these tasks are addressed using distinct models, which leads to high deployment costs, increased computational overhead, and challenges in achieving real-time performance.<n>Multi-task learning (MTL) has emerged as a promising solution that enables the joint learning of multiple tasks within a single unified model.
• Score: 21.18445786285742
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Connected autonomous vehicles (CAVs) must simultaneously perform multiple tasks, such as object detection, semantic segmentation, depth estimation, trajectory prediction, motion prediction, and behaviour prediction, to ensure safe and reliable navigation in complex environments. Vehicle-to-everything (V2X) communication enables cooperative driving among CAVs, thereby mitigating the limitations of individual sensors, reducing occlusions, and improving perception over long distances. Traditionally, these tasks are addressed using distinct models, which leads to high deployment costs, increased computational overhead, and challenges in achieving real-time performance. Multi-task learning (MTL) has recently emerged as a promising solution that enables the joint learning of multiple tasks within a single unified model. This offers improved efficiency and resource utilization. To the best of our knowledge, this survey is the first comprehensive review focused on MTL in the context of CAVs. We begin with an overview of CAVs and MTL to provide foundational background. We then explore the application of MTL across key functional modules, including perception, prediction, planning, control, and multi-agent collaboration. Finally, we discuss the strengths and limitations of existing methods, identify key research gaps, and provide directions for future research aimed at advancing MTL methodologies for CAV systems.

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