Vehicles share their mobility information regularly with the neighborhood road traffic and infrastructure based road side units using cooperative awareness messages (CAMs) to develop a local dynamic map (LDM) for safety applications.
Since the applications provided by C-ITS are related to human safety, reliable as well as secure communications is required.
By using our collaborative sensing scheme, future ITS solutions will be able to establish adequate dissemination protocols or to apply more efficient traffic congestion reduction policies, since they will be aware of the instantaneous density of vehicles. Although carefully collected, accuracy cannot be guaranteed. Differing provisions from the publisher's actual policy or licence agreement may be applicable.
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These basic services, also known as facilities, have been developed as part of a set of standards in which both ISO and ETSI describe the Reference Communication Architecture for future Intelligent Transportation Systems (ITS).
By using a communications stack that instantiates this reference architecture, this paper puts in practice the usage of both facilities in a real vehicular scenario.
To protect the vehicular network from untrusted data of malicious users that could cause network congestion and reduce vehicle safety, ITS standards have proposed various security procedures.
In this paper, we analyse the interrelation between security, Qo S and safety awareness of vehicles in C-ITS.
The Cooperative Awareness Basic Service and Decentralized Environmental Notification Basic Service have been standardized by the European Telecommunications Standards Institute (ETSI) to support vehicular safety and traffic efficiency applications needing continuous status information about surrounding vehicles and asynchronous notification of events, respectively.
These standard specifications detail not only the packet formats for both the Cooperative Awareness Message (CAM) and Decentralized Environmental Notification Message (DENM), but also the general message dissemination rules.
In this article, we propose Zoom Out Broadcast Routing Protocol for driver safety information dissemination in VANET.