VANET nodes can be directly communicated with each other if this VANET node comes in transmission range; the sender nodes are forwarding nodes which send packets to the receivers. In this research paper, concentrate on dismembering and enhancing the most commonly used VANET protocol Greedy Perimeter Coordinator Routing (GPCR). Our concentration particularly is on enhancing the black hole attacks security in the GPCR. The solutions of black hole attack are verified with the help of implementation and simulation using network simulator (NS-2.35). Our investigation demonstrates the comparison between GPCR and black hole-GPCR in the network. This comparison is carried between the simulation time and a number of nodes based on the QoS parameter performance of packet delivery ratio (PDR), average end-to-end delay, average throughput, and energy consumption. The packet delivery ratio performances are increased in GPCR with respect to Black Hole GPCR, its increase the performance of the network. The simulation results show that GPCR is better than black hole-GPCR.
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