Abstract:
The allocation of emergency ambulance bases plays a crucial role in Emergency medical service system. Fast arrival of ambulance to the emergency scene increases the chances of surviving or reduces the victim disability. However, at present, the allocation strategy has been performed by experts using past data without using all other relevant information. In this study, we propose the integration of using spatial risk factors, namely Risky intersections, flood risk areas, BTS stations, community areas, market locations and shopping centers with social media information, include road accident situation, flood and fire situation. All information is analyzed using Kernel density estimation method resulting in the form of heat map. Then, the map is used in a modified Maximizing Covering Location Problem with Heatmap (MCLP-Heatmap). The integrated approach is then applied to Bangkok area with 59 emergency bases. The simulated results indicated that the number of stops can be reduced 3 percent, However, there was a 16.9 percent decrease in the use of emergency ambulance bases. And Its average covering distance is higher than that of current situation.