Abstract
In recent years, under the background that the rapid development of traffic volume makes the current traffic lights far from meeting the urban traffic demand, intelligent traffic lights based on the centralized architecture began to appear. However, in the traffic network with complex structure and private data flow, there are many malicious attacks against the centralized architecture, such as Sybil and ghost car attacks, which undoubtedly brings great security risks to the traditional intelligent traffic lights. Blockchain technology is a popular security framework nowadays. Based on its outstanding characteristics in the distributed architecture and the development of Edge Intelligence (EI) technology, this paper proposes a distributed security architecture scheme based on blockchain technology for the existing intelligent traffic light system. At the same time, based on the model cutting technology proposed by EI, the smart contract is improved to achieve redundant cutting of ledger data in the process of block consensus, which greatly reduces the pressure of blockchain ledger data transmission. In the end of this paper, the superiority of this scheme compared with the traditional intelligent traffic light scheme in communication cost and time cost is demonstrated by simulation experiment.
Highlights
With the rapid development of social economy and technology, traffic congestion has become a major problem in the field of transportation
The main contribution of this paper is to propose an improved security solution in the field of intelligent traffic lights, put forward a distributed intelligent traffic light architecture based on the decentralized characteristics of blockchain technology, and improve and innovate the existing intelligent contract by using the redundant cutting technology proposed by edge intelligence, effectively reducing the communication load in the consensus process in the block network
Taking PoW as an example, only when a block accounting node controls more than 51% of the accounting nodes in the block, can a record be forged without considering the huge number of nodes in the whole blockchain and the loss of their own rights and interests
Summary
With the rapid development of social economy and technology, traffic congestion has become a major problem in the field of transportation. In order to maintain the road traffic and improve the urban traffic efficiency, it is urgent to analyze the existing traffic system conditions, use intelligent algorithm to update the traffic light timing scheme in real time, giving birth to the concept of intelligent traffic lights. P. Zeng et al.: Scheme of Intelligent Traffic Light System Based on Distributed Security Architecture serious traffic congestion and traffic accidents. In order to improve the safety and feasibility of intelligent traffic lights and maintain a good intelligent traffic ecology, this paper introduces the block chain technology with the characteristics of decentralization [2], distributed ledger and consensus mechanism. With the aid of edge intelligence technology, a distributed security framework is established for the intelligent traffic light system, aiming to maintain the data authenticity and behavior security of the intelligent traffic light system through the distributed architecture
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