VANET (Vehicular Ad-hoc Network) technology allows vehicles to communicate with each other (V2V) and with nearby road infrastructure (V2I) to increase road safety. The goal is to avoid over 60% of accidents through early warnings. Vehicles broadcast safety and event messages within a 1000m range at speeds up to 120kph. Challenges include developing effective routing, security, broadcasting, and quality of service standards for the fast moving and unbounded network. Current uses provide navigation, emergency response, theft assistance and alert services through telematics features.

2. Introduction toVANETTechnology
■ VANET stands forVehicular Ad hoc NETwork.
*Ad hoc means a system of network elements that combine to form a
network requiring little or no planning.
*Two main types of vehicular communication system:
>Vehicle toVehicle (V2V)
>Vehicle to Infrastructure (V2I)
*BothV2V andV2I “Ad hoc” in nature

3. V2V Communication
■ V2V communication system that provides a 360 degree view of
similarly-equipped vehicles within communication range.
■ Vehicle control information such as the transmission state, break
status and steering wheel angle as well as theVehicle’s path
history and Path prediction.
■ Uses multi hop technique
■ Uses two types of broadcasting
> Naïve
> Intelligent

4. V2I Communication
■ High bandwidth link between vehicle and roadside equipment.
■ Uses DRSC(Dedicated Short RangeCommunication) technique

5. Challenges:
■ Routing
■ Security Framework
■ Broadcasting
■ Quality of Services (QoS)
Applications:
■ Major classes of application inVANET are:
■ Safely oriented
■ Convenience oriented

6. MAIN GOAL
■ It is designed to increase safety, driving efficiency and make
the driving experience more comfortable.
■ About 1.3 million people die from traffic accident per year.
■ About 60 percent of accidents can be avoided by sufficient
warnings.

7. TECHINCAL SPECIFICATIONS
■ VANETs use IEEE 802.11 wireless communication protocol.
■ Two types of messages sent withinVANETs:
> Periodic safety messages
> Event Driven Messages
■ Broadcast range about 1000 meters and nodes move at an average
speed of 120 kilometer per hour.

8. VANETs Characteristics
■ Power Supply and Conservation isn’t a major concern.
■ Leading Movement Fashion usually occurs on long Highways.
■ Highly Mobile Nodes in constantly changing networks.
■ Unbounded Network size
■ Real-time, time sensitive data exchange
■ Crucial effect of security and privacy.

9. VANETsArchitecture:

10. TELEMATICS FEATURES
■ Security Features are triggered by sensors and events.
■ Convenience features are used to enhance the driving experience.
■ Components used to communicate with other cars, hubs, stations and
content providers.
■ Two main features:
> Security
> Convenience

11. CURRENT USES
■ One of the largest content provider’s is OnStar.
■ Provides safety, emergency and convenience services viaVANETs
> Navigation Services
> Emergency Response
>Theft Assistance

12. Emergency Alerts
■ VANETs are used to disseminate alerts such as Amber Alerts, Silver
Alerts and emergency weather alerts
■ Vehicles GPS location determines the alerts it receives.
■ Potential to save lives.

13. Security and Privacy
■ Due to high mobility, security is more challenging.
■ Wireless nature of transmission process security and privacy concerns.
■ Information such as location, destinations, and speed history have the
potential to be intercepted.

14. POSSIBLE INNOVATIONS
■ 30 Percent of accidents involving emergency vehicles are caused by
other drivers.
■ Including Hospitals in theVANETs communication can help further
increase effectiveness of communications.
■ Alerting vehicles on the road that an emergency vehicle is approaching.

15. Advantages ofVANET
■ Information sharing
■ Cooperative driving
■ Other value added services like navigation, internet access etc.
■ It allows safe and free flow of traffic

16. Routing inVANETs:

17. THANKS 