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The internet of things (IoT) is a network to realize interconnects between almost any object and web services. It can be applied in many domains, such as radio frequency identification (RFID), wireless sensor network(WSN) and so on. The application of IoT brings us the higher efficiency and the more convenient life.

In this paper, we propose a new IoT application framework to search the optimal routes for the ambulances with taking into account the effects for the traffic in the ambulance running time.

In this system, with the help of the RFID tags in the ambulances and wireless sensor nodes on the roads, the dispatch control center in the hospital can collect the real-time traffic conditions where wireless sensor nodes locates.

The report messages are sent to the control center by the multi-hop method. Based on the information coming from sensor nodes, the control center forecasts the optical path to provide the fastest route for the ambulances.

In this decision process, the control center will ignore some information from the nodes, which have higher traffic jam than the average. Experimental results show that our system can provide the best route to the ambulances. And it also has the more potential applications in wide areas