Abstarct: One of the growing applications of wireless networks is the interactive car radio (VANET). Automotive communications are made up of a wireless network in which cars interact with each other about their current situation. The application of intelligent transportation is one of the most important applications of automotive case networks, which are used as an integral part of the intelligent transportation system (ITS). Because of its high mobility and the wide range of network nodes, its centralized management is impossible, and for deploying communications And maintaining the quality of communication paths Using a distributed, dynamic and efficient algorithm for routing is essential. Therefore, the discussion of routing in these types of networks is a challenging and important issue. In this thesis, we will review the OLSR protocol. The OLSR protocol (lixnk lixnk Optimization) is an optimal router protocol for this type of network. And it helps in better service quality and better car communication. The OLSR routing protocol is an optimized AdHoc network lixnk mode protocol. This protocol first reduces the size of the control packets and instead of all the network nodes only specifies a set of nodes among its neighbors and sends messages to the entire nodes through the nodes. This set of node nodes They are called point-to-point relays (MPRs), which minimize the volume of traffic control. In this protocol, each node identifies its neighbor nodes by sending a Hello message to the nodes around it, and selects a series of nodes with a specific algorithm as the node of the MPR. And through these nodes, they will send messages to other neighbors. With this method greatly reduced traffic and overflow messages can be prevented. To simulate this protocol, we first simulate road traffic and then we will cluster and select the cluster head using the genetic algorithm. The diagrams will show the end to end delay and the packet delivery rate and the throughput according to The results will be determined.