Urban Vehicular Ad hoc Networks (UVANETs) are the most important form of mobile ad hoc networks. It has been broadly used in intelligent transportation system(ITS) to supply safety and comfort services to the passengers and drivers and also provide securi-ty/privacy using vehicle-to-vehicle and vehicle-to-road side unit(RSU) communications. In UVANETs this research which maintains the security of the sensitive information shared between vehicles and end-users. In addition to that we tested on different types of attacks and provide possible solutions to handle these attacks. And different emerging open challenges along with the security threats are identified and Detected and the power of each nodes are also managed. This research proposed geographical multi cast network mode to analysis the performance of path selection routing protocols(PSRP) for UVANET because geographical multicast network mode uses central coordinator or it constructs virtual central coordinates that preserve enough neighborhood information to be useful in geographic routing but do not require actual position determination and has moderate bandwidth. Due to these benefits geographical multicast routing algorithm(GMRA) is used to handle security issue, fault detection technique and power management. To simulate the proposed scheme,for performance analysis network simulator-3(NS-3) version-3.23 (V-3.23) is used. Simulation results show that, the PDR for five CBR connections, GMRA is 4 % and 7 % better than GPSR and AODV routing protocols respectively. Similarly one can observe the same advantages of GMRA at 10 CBR and 15 number of CBR connections. The packet loss of GMRA is enhanced by 10 % and 7 % than GPSR and AODV routing protocols respectively. And one can observe the same advantages of GMRA at 5 and 15 number of CBR connections. The delay of GMRA for the three CBR connections are lower than GPSR and AODV routing protocols. Key Words: GMRA, PSRP, UVANET, V2V.