A Survey and Comparative Study of Simulators for Vehicular Ad Hoc Networks (VANETs)

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Wireless communication technologies have now greatly impact the people daily lives. From indoor wireless LANs to outdoor cellular mobile networks, wireless technologies have benefited billions of users around the globe. The era of Vehicular Ad hoc NETworks (VANETs) is now evolving, gaining attention and momentum. Researchers and developers have built VANET simulation software to allow the study and evaluation of various media access, routing, and emergency warning protocols. VANET simulation is fundamentally different from MANETs (Mobile Ad hoc NETworks) simulation because in VANETs, vehicular environment imposes new issues and requirements, such as constrained road topology, multi-path fading and roadside obstacles, traffic flow-models, trip models, varying vehicular speed and mobility, traffic lights, traffic congestion, drivers' behavior, etc.