Faculty of Automatic Control and Computers, University Politehnica of Bucharest, Bucharest 060042, Romania.
Cloud Competency Centre, National College of Ireland, Dublin D01 Y300, Ireland.
Sensors (Basel). 2020 Jan 31;20(3):791. doi: 10.3390/s20030791.
A disruptive technology often used in finance, Internet of Things (IoT) and healthcare, blockchain can reach consensus within a decentralised network-potentially composed of large amounts of unreliable nodes-and to permanently and irreversibly store data in a tamper-proof manner. In this paper, we present a reputation system for Intelligent Transportation Systems (ITS). It considers the users interested in traffic information as the main actors of the architecture. They securely share their data which are collectively validated by other users. Users can choose to employ either such crowd-sourced validated data or data generated by the system to travel between two locations. The data saved is reliable, based on the providers' reputation and cannot be modified. We present results with a simulation for three cities: San Francisco, Rome and Beijing. We have demonstrated the impact of malicious attacks as the average speed decreased if erroneous information was stored in the blockchain as an implemented routing algorithm guides the honest cars on other free routes, and thus crowds other intersections.
区块链是一种常用于金融、物联网和医疗保健领域的颠覆性技术，它可以在去中心化网络中达成共识——该网络可能由大量不可靠的节点组成——并以防篡改的方式永久、不可逆转地存储数据。在本文中，我们提出了一种用于智能交通系统 (ITS) 的声誉系统。它将对交通信息感兴趣的用户视为架构的主要参与者。他们可以安全地共享数据，这些数据由其他用户集体验证。用户可以选择使用这些众包验证的数据或系统生成的数据在两个地点之间出行。保存的数据是可靠的，基于提供者的声誉，并且不能被修改。我们使用旧金山、罗马和北京这三个城市的模拟结果进行了演示。我们展示了恶意攻击的影响，如果错误信息被存储在区块链中，平均速度会降低，因为实施的路由算法会引导诚实的汽车走其他免费路线，从而使其他交叉口拥堵。
