Platooning is an application where a group of vehicles move one after each other in close proximity, acting jointly as a single physical system. The scope of platooning is to improve safety, reduce fuel consumption, and increase road use efficiency. Even if conceived several decades ago as a concept, based on the new progress in automation and vehicular networking platooning has attracted particular attention in the latest years and is expected to become of common implementation in the next future, at least for trucks.

The platoon system is the result of a combination of multiple disciplines, from transportation, to automation, to electronics, to telecommunications. In this survey, we consider the platooning, and more specifically the platooning of trucks, from the point of view of wireless communications. Wireless communications are indeed a key element, since they allow the information to propagate within the convoy with an almost negligible delay and really making all vehicles acting as one. Scope of this paper is to present a comprehensive survey on connected vehicles for the platooning application, starting with an overview of the projects that are driving the development of this technology, followed by a brief overview of the current and upcoming vehicular networking architecture and standards, by a review of the main open issues related to wireless communications applied to platooning, and a discussion of security threats and privacy concerns. The survey will conclude with a discussion of the main areas that we consider still open and that can drive future research directions.

编队是一种应用程序，其中一组车辆彼此靠近移动，共同作为一个单一的物理系统。列队行驶的范围是提高安全性，降低油耗，提高道路使用效率。即使是几十年前的概念，基于自动化和车联网的新进展，编队近年来也受到了特别的关注，预计在未来的未来将成为普遍实施，至少对于卡车来说是这样。

排系统是多个学科结合的结果，从运输到自动化，再到电子，再到电信。在本次调查中，我们从无线通信的角度考虑编队，更具体地说是卡车的编队。无线通信确实是一个关键要素，因为它们允许信息在车队内以几乎可以忽略不计的延迟传播，并且真正使所有车辆都作为一个整体。本文的范围是对用于队列应用的联网车辆进行全面调查，首先概述推动该技术发展的项目，然后简要概述当前和即将推出的车辆网络架构和标准，通过审查与应用于队列的无线通信相关的主要未决问题，以及对安全威胁和隐私问题的讨论。该调查将以讨论我们认为仍然开放并可以推动未来研究方向的主要领域结束。