GA/T 2099-2023
Reliability evaluation index of urban intelligent transportation management system (English Version)

Standard No.

GA/T 2099-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Public Safety Standards  CN  /  GA

Latest

GA/T 2099-2023

Introduction

Background and Technological Evolution of Standard Development

With the deepening of smart city construction, intelligent traffic management systems, as an important component of urban infrastructure, directly affect the efficiency of urban traffic operations and the level of public safety. The release of GA/T 2099-2023 "Reliability Evaluation Indicators for Urban Intelligent Traffic Management Systems" marks a new stage of standardization and normalization in my country's intelligent traffic management system evaluation system.

This standard is based on the research results of the National Quality Basic Special Project "Research on Key Technologies for Information Application and Experience Perception Evaluation in Smart Cities," and was jointly drafted by the Traffic Management Science Research Institute of the Ministry of Public Security, the China Security Technology Prevention Certification Center, Hikvision, Huawei Technologies, and other leading companies in the industry. During the standard development process, the current status of construction and application of intelligent traffic management systems in more than 500 cities across the country was fully considered, and a scientific and comprehensive reliability evaluation system was established for the integrated system characteristics of "monitoring, control, enforcement, and service."

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Analysis of the Evaluation Index System Framework

The standard constructs a multi-level evaluation system consisting of 3 evaluation dimensions, 7 primary indicators, and 17 secondary indicators. The weight allocation of each dimension reflects the key elements of system reliability.

Evaluation Dimensions	Weight Allocation	Number of Primary Indicators	Number of Secondary Indicators	Core Focus Points
Data Acquisition	30%	2	5	Equipment Coverage and Acquisition Capability
Information Transmission	30%	2	5	Network Reliability and Information Quality
System Application	40%	3	7	Data Processing and Function Implementation

As can be seen from the weight distribution, the system application dimension has the highest proportion, reflecting the standard's emphasis on the actual functional implementation and user experience of the system. Data collection and information transmission each account for 30%, forming the basic support for system reliability.

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In-depth Interpretation of the Data Collection Dimension

The data collection dimension includes two primary indicators: coverage and collection capability, with weights of 60% and 40% respectively. The coverage indicator focuses on evaluating the breadth and completeness of the data collected by the system, while the collection capability indicator focuses on the technical performance and stability of the equipment.

Equipment Type	Coverage Requirements	Standard Compliance	Mean Failure Rate Requirements	Relevant Standards
Traffic Flow Acquisition Equipment	Main Road Intersections ≥60%	GB/T 24726	≤0.1	Video Traffic Flow Detector
Automatic Red Light Violation Recording Equipment	Main Road Intersections ≥80%	GA/T 496	≤0.2	Red Light Violation Recording System
Video Surveillance Equipment	Main Road Intersections ≥80%	GB/T 28181	-	Video Surveillance Network System
Road Vehicle Monitoring and Recording Equipment	Intercity Border Points 100%	GA/T 497	≤0.2	Vehicle Monitoring and Recording System
Mobile Police Terminal	On-Duty Police Officers 100%	GA/T 1014	-	Mobile Law Enforcement Policing System

Data Type Evaluation Requirements: The system must be able to collect five types of core data: traffic flow data (flow rate, speed, occupancy rate), violation data, driver and police officer data, video image data, and externally shared data. Meeting all five requirements earns a perfect score of 100, reflecting the standard's emphasis on data diversity.

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Information Transmission Dimension Technical Specifications

The information transmission dimension is divided into two major indicators: **communication network** and **information quality**, each accounting for 50% of the weight. This dimension focuses on the reliability of network infrastructure and the quality assurance of data transmission.

Communication Network Security Requirements

The standard sets forth systematic requirements for communication network security, including:

• Network Isolation: Requires the deployment of isolation facilities such as one-way optical gates and physical isolation cards, and the division of network areas.
• Intrusion Prevention: Requires the deployment of intrusion detection systems, intrusion prevention systems, and systems to resist advanced persistent threat attacks.
• Access Control: Configures access rules for network devices, including source address, destination address, port, and protocol.

Network uptime is required to reach 95% or higher, and bandwidth redundancy is required to be no less than 50%, ensuring stable operation of the system under high load conditions.

Performance Indicators	Required Values	Test Methods	Weight Allocation
Network Performance	≥95%	Number of Faulty Paths × Fault Time / Actual Number of Paths × Total Monthly Time	30%
Bandwidth Redundancy	≥50%	Peak Period Bandwidth Usage / Deployed Bandwidth	30%
Device Online Rate	Score Decreasing in 10% Increments	Number of Real-Time Online Devices / Total Number of Devices Registered in the System	50%
Response Time	≤1 second	Actual Operation Test	-

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System Application Dimension Functional Requirements

The system application dimension has the highest weight (40%), including three primary indicators: data processing, system functions, and data application, accounting for 30%, 40%, and 30% respectively. This dimension reflects the standard's focus on the actual application effect and user experience of the system.

Data Processing Technical Requirements

Standard requirements: The system must possess modern data processing capabilities:

• Processing Environment: Adopts a big data and cloud computing technology framework, with a distributed database environment.
• Computing Capabilities: Possesses distributed offline computing, in-memory computing, and streaming computing capabilities.
• Data Management: Standardizes data according to a unified format and establishes a hierarchical classification management system.
• Analysis Tools: Possesses tools such as full-text indexing, collision analysis, and risk assessment engine.

Real-time traffic display, video patrol, and incident display. GA/T 1146. Meeting 4 requirements earns 100 points, 3 earns 80 points, and 2 earns 60 points. Signal control, scheme configuration, special operations control, and evaluation optimization. GB/T 39900. Violation management, violation screening and review, and intelligent analysis and evidence collection. GA/T 1146. Meeting 3 requirements earns 100 points, 2 earns 75 points, and 1 earns 60 points. Command and dispatch, incident handling, audio-visual collaboration, and duty supervision. GA/T 1146

Functional Modules	Core Functional Requirements	Standard Compliance	Scoring Rules
Traffic Monitoring

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Standard Implementation Recommendations and Application Guidance

Based on an in-depth analysis of the GA/T 2099-2023 standard, the following implementation recommendations are proposed:

Phase Construction Strategy

It is recommended that cities promote the construction of intelligent traffic management systems according to a three-stage strategy of "basic coverage - functional improvement - intelligent enhancement":

1. Phase 1: Focus on completing the basic coverage of data collection equipment, ensuring that the coverage rate of key equipment at main road intersections meets the standard requirements
2. Phase 2: Improve the construction of information transmission networks, enhance network reliability and security, and optimize system functional modules
3. Phase 3: Deepen data analysis applications, improve the system's intelligence level, and achieve data-driven precision governance

Key Technology Selection Recommendations

Technical Fields	Recommended Technologies	Standard Compliance	Implementation Key Points
Data Acquisition	Video Detection, Radar Detection, Geomagnetic Detection	GB/T 24726, GA/T 496	Multi-Source Data Fusion, Redundant Backup
Network Transmission	Fiber Optic Private Network, 5G Wireless Backup	GB/T 28181	Dual-Link Redundancy, Security Isolation
Data Processing	Cloud Computing, Edge Computing	-	Distributed Architecture, Real-Time Computing
System Application	Microservice Architecture, Containerized Deployment	GA/T 1146	Modular Design, Rapid Iteration

Operation and Maintenance Support System Construction

Establishing a sound operation and maintenance support system is key to ensuring system reliability:

• Monitoring and Early Warning: Establish a 24/7 system monitoring mechanism and set thresholds for key indicators for early warning
• Fault Response: Develop tiered fault response plans and clarify the processing time limits for different types of faults
• Performance Optimization: Regularly conduct system performance evaluation and optimization to ensure continuous and stable system operation
• Security Management: Establish a complete security management system, including physical security, network security, and data security

GA/T The implementation of the 2099-2023 standard will strongly promote the transformation of my country's urban intelligent transportation management system construction from "emphasizing construction" to "emphasizing effectiveness," providing important technical support for smart city construction and the modernization of traffic governance.

GA/T 2099-2023 Referenced Document

• GA/T 1014 General technical specifications for mobile law-enforcement systems for public security traffic management
• GA/T 1146 General Technical Specifications for Public Security Traffic Integrated Command Platform
• GA/T 496 General technical specifications for automatic recording systems of red light cameras
• GA/T 497 General technical specifications for intelligent monitoring and recording system for vehicles on roads
• GA/T 994 Specifications for release of road traffic information
• GB 50198 Technical code for project of civil closed circuit monitoring television system
• GB/T 24726 Traffic information collection—Video traffic flow detector
• GB/T 28181 Technical requirements for information transmission,switch and control in video surveillance networking system for public security
• GB/T 33356 Evaluation indicators for new-type smart cities
• GB/T 39898 Technical specifications for the construction of intelligent traffic management system
• GB/T 39900 General technical requirements for the road traffic signal control system
• GJB 451A Reliability, maintainability and supportability terms

GA/T 2099-2023 history

• 2023 GA/T 2099-2023 Reliability evaluation index of urban intelligent transportation management system

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