| Summary: | Vehicular Ad Hoc Networks (VANETs) are special type of mobile ad hoc
networks (MANETs). The vehicles can form a self-organized wireless network for
data exchange. Base on the VANETs, the traffic congestion, the road and weather
conditions, and so on, all can be broadcasted to others. Then the drivers can enjoy
driving comfort; The Transport Agency can manage the traffic much easier and come
out a better road design; the law enforcement agency also can trace all the messages
to their senders, when necessary. Referring to above description, we can make a
conclusion that the messages must be sent securely and quickly. Otherwise, the
messages, which are sent by the hacker, can cause inestimable harm to the traffic
system. The driver and Transport Agency may make wrong decision through the slow
information. To address this concern, we must propose a Vehicle Communication
Network, which can make sure that the messages are reliability, integrity and
timeliness.
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