There are many types of highway division in China. The expressway we are talking about is a trunk highway that is completely controlled according to the requirements of highway traffic volume attributes, and its annual average day and night traffic volume is more than 25,000 vehicles. Different from the railway industry, China's expressway construction started late. It was not until 1989 that Comrade Zou Jiahua, then Vice Premier of the State Council, pointed out that "the expressway is not a question of whether to develop, but a question of necessity" that the expressway in China officially kicked off.
Although it started late, the development of China's expressways has gone through a development process that many developed countries generally need more than 40 years to complete. By the end of 20 19, the expressway mileage in China has reached 149600 km. It can be said that the convenience of 15 expressway has entered the lives of ordinary people, changed people's concept of time and space, and improved people's lifestyle.
At the same time, high traffic volume and high speed bring difficulties to operation, accident and emergency management. In order to improve the management and operation level of expressways, various forms of "smart expressways" have been built in various places for many years, and video monitoring equipment along expressways has been deployed as the main front-end equipment in many systems.
According to the speech materials given a few days ago, there are about186,000 kinds of video equipment on expressways in China, which basically realizes the configuration of one pair of cameras per kilometer, and this huge number of video monitoring equipment is mainly built and applied by three parties. The first is the high-speed traffic police, which is mainly used for traffic safety law enforcement, including bayonet, speed measurement, emergency occupation of roads and so on. There are cable guide hooks, retrograde snapshots, illegal getting on and off snapshots, etc. At the same time, it has the real-time license plate recognition function and traffic statistics function of the inspection and control system. Local expressway operation management companies are mainly used for toll inspection, recovery, traffic flow statistics and traffic state monitoring, especially for accident-prone sections and traffic congestion sections. In order to know the road damage in real time, effectively maintain the expressway and improve the efficiency of road use, the expressway department is also using a large number of video monitoring equipment.
With the construction of ETC and the Internet of Vehicles, the expressway with average cost 1 100 million yuan /km has risen to about 400 million yuan /km in the construction of "super highway" from Hangzhou to Shaoyong, Zhejiang Province, and AI cameras account for a considerable proportion of the extra cost.
Because of the industrial nature of expressway, its network security has been paid close attention to. In recent years, with the changes in the international situation and the increasing demand for network security, the state has intensively promulgated a number of expressway network security policies:
L "Action Plan for Promoting the Development of Comprehensive Transportation Big Data (2020-2025)": Improve data security measures, ensure the safety of national key data, promote the classified management of data in the transportation field, and promote the application of cryptographic technology in important information systems and the independent control of important software and hardware equipment;
L National expressway video networking cloud network technical requirements: all monitoring cameras of expressways (except toll stations and toll lane monitoring facilities) should be networked and digitized, and the equipment information, location information, online status and other information of all cameras along expressways in this province should be provided to the ministerial cloud platform, and automatically updated synchronously;
L Outline of Digital Transportation Development Plan: Improve the network and data security system, strengthen the simultaneous construction of network security and information systems, and improve the network security protection capabilities of key transportation information infrastructures and important information systems. Improve the industry network security standards that adapt to the development of new technologies;
L Guiding opinions on the construction of new infrastructure in the field of transportation: promote the construction of a new endogenous security system for infrastructure with flexible deployment, adaptive functions and cloud-network collaboration. Accelerate the deployment of safety facilities for the application of new technologies in transportation scenarios, and strengthen unified authentication and data transmission protection. Strengthen the protection of key information infrastructure. Build a network security support platform integrating situational awareness, risk early warning, emergency response and joint command, strengthen information sharing and collaborative linkage, form a multi-level defense in depth, active protection and comprehensive prevention system, strengthen threat risk early warning and judgment, and establish a risk assessment system;
The further application of 5G, vehicle-road coordination, Beidou and AI in the era of "station withdrawal" will bring risks and challenges, especially the coverage of high-definition video surveillance, and high-speed video networks and video clouds will also face more and more security problems:
L communication system
Lack of security awareness, thinking that the private network is closed and safe; Weak data integrity and confidentiality protection measures during communication; Weak control measures for unauthorized network connections; Whitelist operation and refined management have not been carried out yet.
L monitoring system
Insufficient attention and weak awareness of safety management; Lack of basic technical and management support, most systems are in a "streaking" state, with many loopholes, viruses and outreach.
L charging system
Security infrastructure configuration and equipment management need to be strengthened urgently; There are high-risk vulnerabilities that have not been dealt with in time and effectively, and high-risk issues such as "eternal blue" and weak passwords need continuous attention; The safety management level of toll stations and road section centers is uneven in the whole network, and the vulnerability multiple increases after networking.
In view of the security of expressway video surveillance, Golden Shield software focuses on the following aspects of security protection for video networks and video clouds on the basis of hierarchical protection:
L assets combing
In-depth analysis of various standard network protocols can obtain the information of devices in the network, identify the legitimacy of devices, calibrate access devices, automatically alarm and intercept illegal access devices.
Admission control
On the premise of not changing the topological structure of expressway video network, the network access management of video network front-end and terminal can be realized, which can prevent illegal mobile terminals from accessing the network at will, block intrusion and counterfeit terminals, improve the network access efficiency and ensure the security of accessing the network.
L operation monitoring
Monitor the integrated operation of front-end cameras, network links and back-end system equipment in the whole network: monitor the online rate, integrity rate, code stream delay and image quality of cameras, monitor the status and operation parameters of network links and network equipment, and monitor the operation parameters and port status of software and hardware systems such as back-end system platforms and servers in real time; Record the behavior of operation and maintenance personnel, realize the recording and alarm of viewing behavior, parameter modification behavior, pan-tilt control, historical playback and other behaviors, and prevent information leakage caused by illegal access to video resources.
L prevent data leakage
Through terminal access control, video data isolated storage, video data outgoing access control, video watermark protection and other technical means, the security of video data application and storage at the terminal is ensured, video candid shooting is prevented, and video data is prevented from being illegally leaked in the circulation process.
L integrated operation and maintenance management
Realize the unified management of the whole network resources, sort out the resource ledger, perceive the operation situation, quantify the quality of operation and maintenance, realize the all-weather, whole-process and all-round centralized monitoring, centralized display, centralized maintenance and centralized assessment statistics of the whole network equipment, and ensure that the video monitoring system of each user of the expressway can exert the maximum benefit.
As a global leader in the field of video network protection, Golden Shield Software has been highly recognized by industry customers and authoritative departments after more than ten years of industry focus and technical accumulation. In the future, Golden Shield Software will continue to increase investment in R&D, innovate and break through, and provide guarantee for improving the level of urban management and promoting the modernization of regional social governance.