交通拥堵对急救医疗服务时空可达性的影响——以广州市为例

doi:10.18306/dlkxjz.2016.04.004

Abstract

Abstract:

Time is a sensitive factor in emergency medical service (EMS). The spatial and temporal differences of EMS accessibility are important for the assessment of siting of emergency facilities and the efficiency of emergency service dispatch. Traffic congestion is a common problem in the central areas of cities, and the impact of congestion on EMS accessibility cannot be ignored. In this study, the impact of traffic congestion on the temporal and spatial accessibility to EMS in the city of Guangzhou was analyzed by using the floating car data. The results show that: (1) During rush hours, the average and longest time between 120 hospitals and communities are 17% and 19% higher respectively than using standard road speed. (2) The accessibility of EMS to an emergency hospital as the center decays along the road network. The accessibility of EMS is high where the emergency hospital number is large and the road network is dense, and vice versa. The impact of traffic congestion on EMS accessibility is significant in areas where the road network and traffic rule are complex. (3) With the increase of time impedance, accessibility change slowed. This trend is more obvious in off-rush hours. Therefore, real-time traffic condition should be considered in research on EMS accessibility to optimize EMS scheduling and improve the efficiency.

Key words: Emergency Medical Service (EMS), spatial-temporal accessibility, floating car, big data, traffic congestion, Guangzhou City

Jianguo CHEN, Suhong ZHOU, Lin LIU, Luzi XIAO, Guangwen SONG. Estimating the effect of traffic congestion on accessibility to emergency medical care services: Take Guangzhou as an example[J].PROGRESS IN GEOGRAPHY, 2016, 35(4): 431-439.

Figures/Tables 6

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References 28

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	交通平峰期可达性				交通高峰期可达性
	等级升高		等级不变	等级降低	等级升高	等级不变	等级降低
β=1.0	85	189	86		77	205	78
β=1.5	80	201	79		80	204	76
β=2.0	79	206	75		80	206	74

Estimating the effect of traffic congestion on accessibility to emergency medical care services: Take Guangzhou as an example

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		高峰时段可达性					平峰时段可达性
		Q1		Q2	Q3	Q4	Q1	Q2	Q3	Q4
设计速度可达性	Q1	58	26	6	0		62	20	7	1
	Q2	22	39	24	5		17	40	26	7
	Q3	8	20	43	19		9	23	40	18
	Q4	2	5	17	66		2	7	17	64

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