In recent years, technological growth has given a significant boost to the development of the automotive sector. Inter-vehicular communications, as they occupy a prominent position among the objectives of car manufacturers, are the subjects of discussion in this thesis. The main standardization bodies that have worked on the implementation of technologies suitable for vehicular communication are the Institute of Electrical and Electronics Engineers (IEEE) and the European Telecommunication Standard Institute (ETSI). The first is known for the realization of the WAVE stack (Wireless Access in Vehicular Environment), while the latter for the ITS-G5 stack. The first aim of this thesis is to introduce the reader to the world of vehicular networks, focusing in particular on the two stacks mentioned earlier.