GB/T 31444-2015 English PDFUS$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 31444-2015: Rating of early-warning of road traffic under fog weather conditions Status: Valid
Basic dataStandard ID: GB/T 31444-2015 (GB/T31444-2015)Description (Translated English): Rating of early-warning of road traffic under fog weather conditions Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: R85 Classification of International Standard: 03.220.20 Word Count Estimation: 13,161 Date of Issue: 2015-05-15 Date of Implementation: 2015-08-01 Quoted Standard: QX/T 47-2007; QX/T 48-2007 Regulation (derived from): National Standard Announcement 2015 No. 15 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Standard specifies the foggy road traffic conditions and alert level partitioning. This Standard applies to the warning level for the fog on the highway network (including highways, primary roads and secondary roads) affect the operation caused by the transport authorities and to determine the meteorological department. Low visibility conditions due to smoke, haze, dust and other weather caused can be implemented by reference. GB/T 31444-2015: Rating of early-warning of road traffic under fog weather conditions---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.Rating of early-warning of road traffic under fog weather conditions ICS 03.220.20 R85 National Standards of People's Republic of China Warning classification foggy highway traffic conditions Issued on. 2015-05-15 2015-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the National Traffic engineering facilities (highway) Standardization Technical Committee (SAC/TC223) and focal points. This standard was drafted. Yunnan Transportation Planning and Design Institute, Research Institute of Highway Ministry of Transport, Public Weather CMA Service Center. The main drafters. Zhang Fachun, Tang Jun-jun, Room Rui, Li Great Wall CHANGES OF NON Wu Hao, Tian Hua, Xiao Ling branch. Warning classification foggy highway traffic conditions1 ScopeThis standard specifies the foggy highway traffic conditions and alert level division method. This standard applies to transport authorities and meteorological services for the fog on the road network (including highways, highway and secondary public Effect Road) run to determine the cause warning level. Poor visibility due to smoke, haze, dust and other weather caused can be implemented by reference.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. QX/T 47-2007 surface weather observing practices - Part 3. meteorological observations visibility QX/T 48-2007 meteorological observation specification - Part 4. weather phenomena observation3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 Warning composite index early-warningcompositeindex An important indicator of the conditions prevailing fog warning road. Thresholds for road traffic conditions fog warning classification determination, reflect the public fog Effect of road network condition. 3.2 Road network density densityofroadnetwork Per 100 square kilometers within the scope of technical grade two or more roads (highways, highway, secondary road) and the intensity of. By equation (1). B1 = 100 · S (1) Where. B1 --- by the density of road network in the affected area, in units of kilometers per 100 square kilometers (km/100km2); L --- in the affected area of \u200b\u200bsecondary and higher highway mileage and units of kilometers (km); S --- that the total area of \u200b\u200bthe affected area, in units of square kilometers (km2). 3.3 Congestion congestiondegree The actual amount of network traffic and the traffic ratio adaptation.4 foggy highway traffic conditions Warning classificationAccording to the situation and the extent of fog, combined road network, traffic and terrain, fog warning by road traffic conditions from strong to weak is divided into the following three Levels (Table 1). ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 31444-2015_English be delivered?Answer: Upon your order, we will start to translate GB/T 31444-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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