那曲市公路交通事故不良天气高影响路段及其气象因素分析

doi:10.3969/j.issn.1673-503X.2023.02.013

Abstract

Abstract:

Using the data on road traffic accidents caused by weather in Nagchu Municipality in Tibet from January of 2017 to June of 2020, as well as meteorological data from national-level meteorological stations near the accident sites, the grade and spatiotemporal distribution characteristics of the traffic accidents and their weather-related causes were analyzed.The results show that over the past three years, the weather-caused traffic accidents in Nagchu have been increasing year by year.The order of the ratio of weather conditions inducing traffic accidents from high to low is snow, rain, ice roads, hail, and fog.The number of traffic accidents features an obvious monthly and diurnal variation, and the time phase from 08:01 to 12:00 a.m.from December to next March is an accident-prone period.Accident-prone road sections are mainly the G109 Qinghai-Tibet Road.Increasing winter precipitation and decreasing average ground surface temperatures at 0 cm are the main meteorological reasons for the increase in the number of traffic accidents year by year.

Key words: Traffic accident, Qinghai-Tibet Highway, Sichuan-Tibet Highway

CLC Number:

P429

Men YANG,Hua TIAN,Tsering DAWA,Ben-jun GUO. Analysis of spatial and temporal changes of traffic accidents in road sections highly affected by severe weather conditions and their meteorological factors in Nagchu City[J]. Journal of Meteorology and Environment, 2023, 39(2): 100-106.

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References 21

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道路名称	降雪	降雨	结冰	雾
G109	40.5	5.6	2.6	3.7
G317	17.9	4.1	0.0	0.0
S305	0.0	1.3	14.4	0.0
S303	5.6	2.2	0.0	0.0

年份	月降水量/mm	月平均气温/℃	月积雪日数/d	地面0 cm月平均温度/℃
2017年	2.3	1.2	1.0	5.3
2018年	13.9	-3.0	7.0	0.7
2019年	31.9	-0.9	4.0	3.1
30 a平均	16.8	-1.7	7.1	1.9

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Analysis of spatial and temporal changes of traffic accidents in road sections highly affected by severe weather conditions and their meteorological factors in Nagchu City

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