The protection of vulnerable road users (VRUs) has been an active research topic in recent years. In this context, P2V (Pedestrian-to-Vehicle) and V2P (Vehicle-to-Pedestrian) communication systems have become crucial technologies to minimize potential dangers, due to the high detection rates and the high user-satisfaction levels they achieve. The recent release of the latest versions of SUMO (Simulation of Urban Mobility) and TraaS (TraCI as a Service) reveals the possibility of developing both P2V and V2P communications in a simulated 3D environment with microscopic modeling of vehicles and pedestrians, as well as the possibility of testing the efficiency of the proposed system. To this end, we implemented a 3D driving simulator with pedestrian integration, using a powerful game engine (Unity 3D) that accessed data from the SUMO open source traffic simulator and was therefore capable of simulating vehicle-pedestrian interaction through Transmission Control Protocol (TCP) connection. Results from a defined use case validated the presented approach.