GB/T 42442.2-2024
Smart Cities Smart Parking Part 2: Data Requirements (English Version)

Standard No.

GB/T 42442.2-2024

Language

Chinese, Available in English version

Release Date

2024

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China  CN  /  GB

Latest

GB/T 42442.2-2024

Introduction

Interpretation of the core content of the standard

As the second part of the GB/T 42442 series, this standard focuses on regulating the data governance system in the smart parking scenario. It complements the overall architecture of Part 1 and jointly builds a complete standard chain from infrastructure to data application.

Technical evolution background: With the surge in the number of motor vehicles in cities, the limitations of traditional parking management models have become increasingly prominent. This standard solves the problem of cross-system interconnection and interoperability by unifying data specifications, laying the foundation for innovative applications such as dynamic allocation of parking resources and touchless payment.

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Data classification system

Major data categories	Number of subcategories	Typical data	Update frequency
Parking resource category	4	Parking space size, charging pile configuration	Static
Parking record category	3	Entry time, license plate recognition record	Dynamic
Operation and management category	7	User account, transaction flow	Real time

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Key data element specifications

The standard adopts a three-segment eight-bit encoding rule (such as 01010001) to standardize the definitions of 329 data elements. The main attributes include:

• Identification class:Internal identifier, Chinese name (required)
• Definition class:Business meaning description (required)
• Representation class:Data type, format, value range (required)
• Additional class:Unit of measurement, remarks (optional)

Taking the parking space data element as an example, core attributes such as size (length × width × height), whether reservations are supported, and charging pile configuration are accurately standardized.

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Data Lifecycle Management

Links	Technical Requirements	Safety Measures
Collection	Support breakpoint resume, multi-source comparison	Device two-way authentication
Transmission	Compatible with TCP/IP/MQTT protocols	SM4 national secret encryption
Storage	Coexistence of structured and unstructured	Three-level backup strategy

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Implementation Suggestions

Phase-based construction path:

1. Prioritize the standardized entry of static data (parking lot archives, charging rules)
2. Deploy IoT devices to realize real-time collection of dynamic data (parking space status, entry and exit records)
3. Establish a data quality monitoring system to ensure key indicators (equipment online rate > 98%)

Special reminder for privacy protection:Strictly follow GB/T 35273 to desensitize sensitive data such as license plates and payment information. It is recommended to adopt a dual protection mechanism of dynamic token + access audit.