Abstract
The existing accident alarm systems are based on fixed networks and their structure cannot be changed. They cannot prevent secondary accidents timely or get the help from adjacent drivers or pedestrians. A dynamic alarm system, named Traffic Emergency Detection and Alarm System, is proposed in this paper. The system not only collects the accident information, but also automatically forms a dynamic network, sends out alarm messages to adjacent drivers or pedestrians, and combines different resources or objects to provide an efficient medical aid. In addition, an alarm targets selection algorithm is proposed, which is based on a dynamic Analytic Hierarchy Process (AHP) method. Two cases are analyzed in detail, which cover the normal and special circumstances. They illustrate that the dynamic AHP method can successfully adapt to selecting alarm targets in different scenarios.
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