GB/T 51334-2018 in English
VALIDTechnical standard for urban comprehensive travel survey
- Issued on:2018-11-01
- Implemented on:2019-04-01
- File Format:PDF
- Delivery:Via email within 5 business days
$466.00
Introduction
Innovation breakthroughs in core technologies of standards
Four-dimensional model of intelligent sampling
- Dual spatial sampling: gridding of traffic communities and dynamic zoning of hot spots of floating population
- Time period stratification strategy: differentiated sampling ratios during morning peak/off-peak/evening peak periods
Analysis of technical requirements of core chapters
| Survey type | Sampling technical indicators | Data verification mechanism | Characteristic statistical analysis dimensions |
|---|---|---|---|
| Resident travel survey | 0.5%-4% three-level sampling rate | GIS geocoding consistency check | Commuting resilience index |
| Cross-border traffic survey | 20% minimum sample rate | License plate authenticity verification | Cargo spatiotemporal tidal parameters |
Construction of characteristic parameter system
Approval line flow correction coefficient group
| Vehicle category | DCQ conversion coefficient | Time period correction factor |
|---|---|---|
| Articulated bus | 4.0 | Peak 1.2/Off-peak 0.9 |
Mixed travel MEI index model
- Transfer connection degree: QR accessibility weighted value
- Purpose superposition effect: 40mins window rollback correction
Implementation of retention proposal plan
Professional equipment selection standard
- PAD electronic questionnaire collection terminal: vibration and dustproof grade IP54
- GPS capture accuracy: urban canyon area ≮20 meters
Data link security specification
Establish a closed-loop three-level encryption verification mechanism: device-side dynamic watermark + transmission channel SM4 algorithm + repository feature desensitization
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