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This paper present evaluation of wireless networking based on IEEE 802.11a standard for use in a vehicular environment. This standard is well-known and widely used to provide indoor wireless communication for stationary or slow moving users. Despite of this initial application we analyzed this wireless communication standard to understand basic performance and suitability for Intelligent Transportation Systems (ITS) providing a ubiquitous mobile INTERNET access. The experimental results we acquired using National Chiao Tung University- network simulator (NCTUns) - simulation/emulation tool for evaluating the performance of vehicle to infrastructure communication in variable mobility scenarios.