Abstract: In order to better analyze dynamic transportation flow so as to gain road traffic information, this paper combined the Internet of Things technology and the intelligent transportation system and proposed a new intelligent transportation detection system-IhFDS(Intelligent Transportation Flow Detection System Based on Internet of Things).ITFDS obtains original traffic parameters and initial data fusion by vehicle sensor nodes. The sink is the central node for information gathering, distribution and secondary data fusion, and the center engine room is responsible for statistics and management. Simulation results show ITFDS can effectively and timely obtain the value of road transportation flow and send it to the vehicle,based on which travel routes can be selected.

Key words: Intelligent transportation,Internet of things, Transportation flow detection