GB/T 35640-2017 in English
VALIDData model and exchange format for public transportation navigation
- Issued on:2017-12-29
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
$301.00
《GB/T 35640-2017公交导航数据模型与交换格式》由TC230（全国地理信息标准化技术委员会）归口，主管部门为自然资源部(测绘地理)。
Introduction
1. Standard Overview
GB/T 35640—2017 "Public Transportation Navigation Data Model and Exchange Format" is the first standard formulated for public transportation navigation system in China. It mainly regulates the data structure and exchange method of core elements such as bus stops, routes, and enterprises. The standard was proposed by the National Administration of Surveying, Mapping and Geoinformation and is managed by the National Technical Committee for Geographic Information Standardization.
2. Comparison of standard frameworks
| Standard Dimensions | GB/T 35640—2017 | International Reference Standards |
|---|---|---|
| Data Model | Public Transport Element Division: Stations, Routes, Enterprises | ISO 19157 (Geographic Information Data Model) |
| Exchange Format | JSON/XML Structured Data Output | OGC Standard WFS Protocol |
| Scope of Application | Urban Public Transport Navigation Service | Global Public Transport Information System (GTFS) |
3. Analysis of core data elements
Taking Bus POI (station/entrance/exit) as an example, the standard defines the following key fields in detail:
- POI number: unique identifier, encoded in 32-bit integer.
- Type code: distinguishes stations and entrances and exits (0000: initial value; 0001: station; 0002: entrance and exit).
- Display coordinates: longitude and latitude location data, used for visualization of navigation electronic maps.
4. Analysis of Technology Evolution
Compared with the traditional bus dispatching system, GB/T 35640—2017 introduces the standardization concept of modern geographic information system (GIS):
- Spatial data support: For the first time, spatial geometric data is standardized in public transportation navigation to improve positioning accuracy.
- Multi-language extension: The language code field enables multi-language display of POI names (supporting simplified and traditional Chinese and international phonetic symbols).
- Deepening of associated information: Strengthens the association between stations, routes and enterprises, making it easier to build a complete transportation network.
5. Implementation Suggestions
Based on the characteristics of the standard, the following implementation paths are recommended:
- Data cleaning: Ensure that the existing bus station and route data comply with the Permanent Identification (PID) coding rules.
- System docking: Develop an adaptation module to support the import and export functions of standard formats.
- Service optimization: Combine with the GIS platform to improve the positioning accuracy and service response speed of the public transportation navigation system.
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