The main objective of Vehicular Ad Hoc Networks (VANETs) is to improve drivers' safety and traffic efficiency. These networks are considered as a key component of Intelligent Transportation Systems (ITS). Periodic communication of VANET generates a huge volume of data, thus requiring adequate storage and computational resources. Due to high demands in terms of mobility, location awareness and low latency, there is a growing research interest in the role of fog computing in VANETs. Fog computing facilitates the communication, computing and networking close to end terminals. As an integration of fog computing and vehicular networks, the paradigm Vehicular fog computing (VFC) is a promising solution for real-time and location-aware network responses. This paper analyzes the possibilities of VFC and its application in traffic safety improvements. Key characteristics of VFC, the architecture and challenges in vehicular applications are also going to be addressed.
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