Hi, iam here to write about one of the interesting topic that is intelligent transport using vanet. First of all lets know
what is Vanet? Vanet means Vehicular Adhock Network . Most interesting thing is that it dont need a much burden to control your vehicles in a heavy traffic. whenever there is a vehicle beside you then you will get an indication in your vehicle that something exists before your way. Then you can prevent from accidents. It is something like a mobile network with network towers on the road side giving
information to all the near by vehicles. The information related to the accidents is given prior information to all the vehicles. It also gives the shortest posiible reachable way to the destination. The main problem with the VANET is the fake information. This can be reduced by giving a authorisation to the vehicle with a VANET network system. However it reaches the expectation of all the people to have their life as long as possible with their investment.
Applications of VANET:
The three major classes of applications possible in VANET are safety oriented, convenience oriented and commercial oriented. Safety applications will monitor the surrounding road, approaching vehicles, surface of the road, road curves etc. . They will exchange messages and co-operate to help other vehicles out under such scenario. Though reliability and latency would be of major concern, it may automate things like emergency braking to avoid potential accidents. Convenience application will be mainly of traffic management type. Their goal would be to enhance traffic efficiency by boosting the degree of convenience for drivers. Commercial applications will provide the driver with the entertainment and services as web access, streaming audio and video.
Security: The main challenge in providing security in VANET depends on privacy, trust, cost and gradual deployment. Some existing security tools in some countries include electronic licence plates (ELP), which are cryptographically verifiable numbers equivalent to traditional license plates and help in identifying stolen cars and also keeping track of vehicles crossing country border, vehicular public key infrastructure (VPKI) in which a certification authority manages security issues of the network like key distribution, certificate revocation etc., event data recording by which important parameter can be registered during abnormal situation like accidents etc. Tamper proof hardware is essential for storing the cryptographic material like ELP and VPKI keys for decreasing the possibility of information leakage. To keep a tap on bogus information attack, data correlation techniques are used. To identify false position information, secure positioning techniques like verifiable multilateration is commonly used.
Conclusion
VANET is definitely something to lookout for in the future. A lot of theoretical work has been put into realizing these networks and few experiments has been performed to validate this theory as cost of setting up this architecture is high, but more such efforts can be expected in near future. A successful vehicular network will open up a plethora of services to a huge number of audience which will turn out to be life saving as well as fun.