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Mobile ad-hoc networking with wireless LAN infrastructure can be employed to build inter-vehicle communication based applications. The associated high velocities and hostile driving environments pose a challenge to the performance of a wireless LAN. This paper assesses the performance of a wireless Local Area Network in different vehicular traffic and mobility scenarios. The network throughput and the quality of the wireless communication channel, measured on IEEE 802.11b compliant equipment, are observed to degrade with increasingly stressful communication scenarios. The test scenarios are varied by conducting the experiments under different vehicular mobility, peer-distance and driving environment conditions. We present results that can facilitate development of efficient applications for inter-vehicular communication. We also suggest optimization measures through aggression control via variations in packet size. Keywords-Local Area Network, IEEE 802.11b, aggression control. I.INTRODUCTION Inter-vehicle communication can be used to facilitate applications [8,9] improving driving safety and convenience. Potential uses of such applications are dynamic traffic routing, driver assistance and navigation, entertainment, co-operative driving and platooning [4], etc. Multimedia devices supporting communication and entertainment are already being deployed in vehicles. The existing ad-hoc networking infrastructure can be leveraged and performance enhancement measures can be innovated for provisioning seamless inter-vehicle communication. As opposed to a centralized service, an adhoc network is much better suited for vehicle-related applications that exchange data having local relevance. Intervehicle communication support by 3G networks has been discussed in literature [3]. However, in a centralized network topology, the information has to propagate from a vehicle to a central base station and back from the base station to another vehicle. The centralized architecture is hence not very efficient for applications that distribute data only between groups of vehicles that are spatially close to each other. An adhoc network can instead be employed between vehicles to help dispense traffic-related information, emergency warning in case of accidents, etc.

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