In this paper, we introduce possible approaches for transmission of safety messages using LTE/LTE-A network. The first solution is using only LTE cellular connections. Vehicles transmit messages to a central server and it forwards the messages to the vehicles in the awareness area of the transmitter vehicle. The second approach uses only D2D capability of LTE, allowing vehicles to communicate directly without the involvement of the infrastructure. The last approach uses both cellular and D2D connections of LTE. We compared the possible approaches using simulation results regarding the required amount of resources, central information accuracy, and successful discovery ratio of the vehicles in the awareness area of the transmitter vehicle. Each approach has advantages and disadvantages, thus the appropriate approach is chosen based on the specific vehicular applications requirements and also availability of resources.