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In this paper, we present a location-based routing algorithm with cluster-based flooding for vehicle to vehicle communication. We consider a motorway environment with associated high mobility and contrast and compare positionbased and non-position-based routing strategies, along with a limiting function for flood mechanisms in reactive ad-hoc protocols. The performance of Dynamic Source Routing (DSR) and Ad-Hoc On-demand Distance Vector Routing (AODV) for non-positional and Location Routing Algorithm with Cluster-Based Flooding (LOU-CBF) for positional algorithms are considered. Our proposed flooding limiting technique is compared with AODV and DSR by simulation. The mobility of the vehicles on a motorway using a microscopic traffic model developed in OPNET has been used to evaluate average Route Discovery (RD) time, End-toEnd Delay (EED), Routing Load, Routing Overhead, Overhead, and Delivery Ratio.

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