Abstract
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.
Highlights
With the mass adoption of mobile devices, both industry and academia have focused on developing a new concept, namely, mobile crowdsensing
By using blockchain technologies to address Internet of Things (IoT) privacy and security [2], we propose to integrate travellers and public transport as a transportation continuum, to develop a secure reputation system where users transmit traffic information and receive travel information which can relied on
Trust and reputation management in vehicular ad hoc networks (VANETs) is a crucial matter, as broadcasted messages that represent traffic events should be endorsed by drivers within the same area and rebroadcasted or are discarded if the trust value is less than a predefined threshold
Summary
With the mass adoption of mobile devices, both industry and academia have focused on developing a new concept, namely, mobile crowdsensing. By using blockchain technologies to address IoT privacy and security [2], we propose to integrate travellers and public transport as a transportation continuum, to develop a secure reputation system where users transmit traffic information and receive travel information which can relied on. The system determines the traffic conditions within the areas from which the data is transmitted and can redirect users to the fastest routes according to the preferred means of transport Both reputation and valid traffic data are permanently stored in a tamper-proof blockchain which cannot be modified by attackers. The consensus algorithm is the process through which the distributed network reaches an agreement on the transactions and blocks validity. The design of consensus algorithms takes into account the fact that in the network there are unreliable nodes, processes or services may become unavailable, or communication may be interrupted.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
