Abstract Increasing traffic load on existing transport infrastructure is resulting in bottlenecks on vehicular movement. Frequent traffic jams and accidents impose severe restrictions on passenger safety and comfort. This can affect the response time of emergency vehicles such as ambulances and fire brigades in reaching their destinations. This paper proposes a RSU based scheme that enables vehicles to evaluate existing traffic condition and dynamically adjust route information for computing optimal route to their intended destination. Each RSU estimates the congestion of all the lanes within its transmission range by considering the cumulative load of transmitted packets. This load is then utilized for estimating the vehicle density and calculating the optimal route for various ontology of vehicles by using activity file based routing protocol. The RSUs based backbone then transmits this information to the neighboring vehicles. The results of simulation represent the effectiveness and simplicity by the proposed scheme in routing vehicles through the most appropriate route and makes it more adaptive for integration with the existing approaches.
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