The graphical user interface becomes an important element in simulation systems. The problem in this type of systems is that there is plenty of information in the environment that is not provided in the best way to the user. This information can be provided through mechanisms of awareness. However, how to incorporate these mechanisms to the graphical interface of a traffic system is not easy. This paper proposes a method that allows graphical interfaces designers to incorporate awareness mechanisms in driving simulation environments. This method allows engineers to design usable interfaces that simulate reality more adequately.