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It`s hard to signal making way for the ambulance when accident happened. Since the warning light of ambulance is flashing to a low height so that cars on the road may or may not noticed this urgent information.From now on, the emergent sign will be projected on the sky bypriority light. Therefore, it`s easier to know there is an ambulance coming behind cars on the road in order to make way.
National Tsing Hua University
Hsinchu, Taiwan
Kao Erh-Ting,
National Tsing Hua University