Vehicular Ad-Hoc Network (VANET) is an prominent new technology develop in ad hoc network, wireless local area network i.e WLAN and cellular technology to achieve intelligent intervehicle communications ,improve road traffic safety and improve the efficiency .Within a given geographical region broadcast based geocast enable to provide efficient data dissemination to vehicle. Broadcast based geo...

The Vehicular ad hoc network (VANET) is an emerging new technology. Developing multi-hop routing protocols for urban VANETs is a challenging task. VANET is one of the influencing areas for the improvement of Intelligent Transportation System (ITS) in order to provide safety and comfort to the road users. Besides safety applications VANET also provide comfort applications to the road users. Auto...

Human safety considerations linked with rapidly growing auto mobile market has given special attention to the Intelligent Transportation System (ITS). ITS provides a set of standards for inter vehicular communication with emphasis on safety, traffic efficiency and infotainment related applications. In ITS, the vehicles acting as mobile nodes, form a specialized ad hoc network, known as Vehicula...

A vehicular ad hoc network (VANET) is a mobile network in which vehicles acting as moving nodes communicate with each other through an ad hoc wireless network. VANETs have become the core component of Intelligent Transportation Systems (ITS) which aim to improve the road safety and efficiency. Only if the communication scheme used in a VANET is stable can these aims be achieved. Frequent change...

A vehicular ad hoc network (VANET) uses vehicles as mobile nodes in a Mobile ad hoc Network (MANET) to create a mobile network. Vehicles on the road usually move in one direction or in one pattern which we can use for creating network on the road. Every vehicle which is moving on the road can act as router and used to create network and with the help of this network packets can be disseminated ...

Vehicular Ad-hoc Network (VANET) has become an active area of research due to its major role to improve vehicle and road safety, traffic efficiency, and convenience as well as comfort to both drivers and passengers. This paper thus addresses some of the attributes and challenging issues related to Vehicular Ad-hoc Networks (VANETs). A lot of VANET research work have focused on specific areas in...

VANET (Vehicular Ad-hoc Network) which is a hy- brid network (combination of infrastructure and infra- structure-less networks) is an emergent technology with promising future as well as great challenges especially in security. By the other hand this type of network is very sensible to safety problem. This paper focuses on a new mechanism for DoS (denial of service) attacks on the physical and ...

Vehicular Ad-hoc Network (VANET) is a growing technology. The vehicle (acting as mobile routers) in the network uses the wireless medium to communicate with other nodes (vehicles) in their radio range. A heterogeneous wireless network (HWN) which is hybrid network of cellular network (having access routers (AR) and Internet Service Providers (ISP) for providing communication and internet servic...

Trusted routing in VANET is a challenging task due to highly dynamic network topologies and openness of wireless architecture. To provide secure routing among the Vehicular Ad-hoc Networks (VANET) and to avoid selfish nodes, an Optimized Node Selection Routing Protocol (Trusted-ONSRP) of VANET has been designed based on trusted metrics using a Trusted Computing Algorithm. The results stated tha...

Clustering in vehicular ad hoc networks (VANET) is one of the control schemes used to make VANET global topology less dynamic. Many of the VANET clustering algorithms are derived from mobile ad hoc networks (MANET). However, VANET nodes are characterized by their high mobility, and the existence of VANET nodes in the same geographic proximity does not mean that they exhibit the same mobility pa...