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GB/T 24726-2021: Traffic information collection - Video traffic flow detector
Status: Valid GB/T 24726: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 24726-2021 | English | 299 |
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Traffic information collection - Video traffic flow detector
| Valid |
GB/T 24726-2021
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| GB/T 24726-2009 | English | 479 |
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Traffic information collection -- Video vehicle detector
| Obsolete |
GB/T 24726-2009
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PDF similar to GB/T 24726-2021
Basic data | Standard ID | GB/T 24726-2021 (GB/T24726-2021) | | Description (Translated English) | Traffic information collection - Video traffic flow detector | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | R86 | | Word Count Estimation | 16,197 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 24726-2021: Traffic information collection - Video traffic flow detector---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Traffic information collection - Video traffic flow detector
ICS 03.220.20;35.240.60
CCSR86
National Standards of People's Republic of China
Replace GB/T 24726-2009
Traffic information collection video traffic flow detector
Released on 2021-10-11
2022-05-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Technical requirements 2
5 Test method 6
6 Inspection rules 9
7 Marking, packaging, transportation and storage 10
Reference 12
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 24726-2009 "Traffic Information Collection Video Vehicle Detector", compared with GB/T 24726-2009,
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Added terms and definitions "traffic flow", "headway time", "headway distance", and "space occupancy" (see 3.1, 3.6, 3.7, 3.9), change
The terms and definitions "video traffic flow detector", "vehicle flow", "vehicle speed at location", "average speed" and "time occupancy rate" (see 3.2,
3.3, 3.4, 3.5, 3.8, Chapter 3 of the.2009 edition);
b) The environments and regions where the detectors Type A and Type B are applicable have been added (see 4.1.1.1);
c) The relative humidity range of the environment when the detector is working is changed (see 4.1.2, 4.1.2 of the.2009 edition);
d) Part of the detection information output by the detector and its main technical parameter requirements have been added (see 4.2, 4.3.1, Table 1);
e) The power requirements of the detector have been changed (see 4.3.6, 4.3.7 of the.2009 edition);
f) The clauses of "Storage", "Interface" and "Other Requirements" have been added (see 4.3.7, 4.3.8, 4.3.9);
g) The damp and heat conditions during the insulation resistance measurement are changed (see 4.5.1, 4.5.1 of the.2009 edition);
h) "Grounding and lightning protection", "temperature resistance", "humid heat resistance", "salt spray corrosion resistance", "aging resistance", and "mechanical vibration resistance" have been changed.
Dynamic performance", "Protection level", and "Electromagnetic compatibility" requirements (see 4.5.3, 4.7.3, 4.7.4, 4.7.5, 4.7.6, 4.7.7, 4.7.8, 4.8,
The.2009 version of 4.5.3, 4.7.3, 4.7.4, 4.7.5, 4.7.6, 4.7.7, 4.7.9, 4.5.4);
i) The requirements and test methods for "wind pressure resistance" have been deleted (see 4.7.8 and 5.6.8 in the.2009 edition);
j) The requirements of testers have been changed (see 5.3, 5.2.1.2 of the.2009 edition);
k) The requirements of "Main technical parameter testing" are changed (see 5.4, 5.2.1 of the.2009 edition);
l) Changed "Grounding and Lightning Protection", "Power Adaptability", "Reliability Test", "Environment Adaptability Test", "Electromagnetic Compatibility Test" and "Protection"
The test method (see 5.6.3, 5.6.4, 5.7, 5.8, 5.9, 5.10, 5.4.3, 5.2.2, 5.5, 5.6, 5.4.4, 5.6.9 of the.2009 edition);
m) The requirements for mass production have been added (see 6.1);
n) Type inspection and factory inspection items have been changed (see Table 2, Table 1 of the.2009 edition);
o) The requirements for "marking" have been changed (see 7.1, 7.1 of the.2009 edition);
p) The requirements for "packaging" are changed (see 7.2.1, 7.2.1 of the.2009 edition).
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed and managed by the National Intelligent Transportation System Standardization Technical Committee (SAC/TC268).
Drafting organizations of this document. Institute of Highway Science, Ministry of Transport, Beijing Municipal Transportation Information Center, Beijing Municipal Commission of Transportation, Hangzhou Haikang
Weishi Digital Technology Co., Ltd., Zhejiang Dahua Technology Co., Ltd., Beijing CCCC Guotong Intelligent Transportation System Technology Co., Ltd.,
Zhangjiakou City Transportation Bureau, Zhongyun Zhiwang Data Industry (Changzhou) Co., Ltd.
The main drafters of this document. Li Honghai, Liu Hao, Zhong Chongbo, Zhang Jinjin, Zhang Zhuomin, Niu Shuyun, Zou Ying, Ge Qibin, Zhang Jiancang, Gao Jian,
Chen Yuan, Yuan Sirui, Jiang Zhengxu, Li Jiwen, Zhao Li, Zhang Fan, Yin Sheng, Ye Jiayong, Zhang Zhi.
This document was first published in.2009, and this is the first revision.
Traffic information collection video traffic flow detector
1 Scope
This document specifies the technical requirements, test methods, inspection rules, and marking, packaging, transportation and storage requirements for video traffic flow detectors.
This document applies to video traffic flow detectors that measure motor vehicle traffic parameters on the road.
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 191 Packaging, storage and transportation pictorial signs
GB/T 2423.1 Environmental testing of electrical and electronic products Part 2.Test method Test A. Low temperature
GB/T 2423.2 Environmental testing of electric and electronic products Part 2.Test method Test B. High temperature
GB/T 2423.3 Environmental Test Part 2.Test Method Test Cab. Constant Humidity Test
GB/T 2423.10 Environmental Test Part 2.Test Method Test Fc. Vibration (Sine)
GB/T 2423.17 Environmental testing of electrical and electronic products Part 2.Test method Test Ka. Salt spray
GB/T 2423.22 Environmental Test Part 2.Test Method Test N. Temperature Change
GB/T 4208 Shell protection grade (IP code)
GB/T 5080.7 Equipment Reliability Test The verification test plan for failure rate and mean time between failures under the assumption of constant failure rate
GB/T 17626.2 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test
GB/T 17626.3 Electromagnetic compatibility test and measurement technology Radio frequency electromagnetic field radiation immunity test
GB/T 17626.4 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test
GB/T 22040 Weather resistance requirements and test methods for plastic products of facilities along highways
GB 50689 Communications Bureau (Station) Lightning Protection and Grounding Engineering Design Code
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Trafficflow
The flow of people and cars on the road.
Note. In the case of no distinction, generally refers to the flow of traffic. Refers to the flow of motor vehicles in this document.
[Source. GB/T 29108-2021, 5.19]
3.2
Video traffic flow detector videotrafficflowdetector
Video image processing technology is used to collect and process dynamic information of the traffic flow on the road to detect and output the machine in the target area.
Testing equipment for data of motor vehicle model, traffic volume, average speed, headway, headway distance, time occupancy rate and space occupancy rate.
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