The deployment of cooperative-intelligent transport systems (C-ITS) has started, and standardization and research activities are moving forward to improve road safety and vehicular efficiency. An aspect that is still felt as a limitation by the research groups active in the field, is the difficulty to validate the solutions with real hardware and software, because of the huge investments that are needed when multiple equipped vehicles need to be considered. In this work, we present a platform with low-cost hardware based on a Raspberry Pi and a Wi-Fi module transmitting at 5.9 GHz, and on the open-source software Open Stack for Car (OScar), which is compliant with the ETSI C-ITS standards. With a limited cost in the order of 200 EUR, the platform realizes a device which is standard compliant and can be used as either on-board unit (OBU) or road side unit (RSU). The limited cost makes the testbed scalable to several units with limited budget and the limited size makes it also deployable on mini-cars to test advanced connected and autonomous vehicle (CAV) networks and applications. Our tests demonstrate its interoperability with other devices, compliance in terms of power spectrum, and a range of a few hundred meters in line-of-sight (LOS) conditions using the standard settings of ITS-G5.

翻译：协作式智能交通系统（C-ITS）的部署已经启动，相关标准化与研究活动正持续推进，旨在提升道路安全与交通效率。然而，该领域活跃的研究团队普遍认为，由于在考虑多辆装备车辆时所需投入的巨大成本，使用真实硬件与软件验证解决方案仍存在困难。本研究提出一种基于低成本硬件的平台：该平台采用树莓派与工作在5.9 GHz频段的Wi-Fi模块，并搭载符合ETSI C-ITS标准的开源软件Open Stack for Car（OScar）。该平台以约200欧元的有限成本，实现了符合标准的设备，既可用作车载单元（OBU），也可作为路侧单元（RSU）。其低廉成本使得测试平台能够在有限预算下扩展至多个单元，而紧凑尺寸也使其可部署于微型车辆上，用于测试先进的网联与自动驾驶车辆（CAV）网络及应用。我们的测试验证了该设备与其他设备的互操作性、功率谱合规性，以及在视距（LOS）条件下使用ITS-G5标准配置可实现数百米的通信范围。