Herramienta VALLE para la visualización interactiva de carreteras. Approximately 3 years ago, the Spanish company DRAGADOS undertook the creation of a Highway Design program completely integrated in a Virtual Reality environment. Throughout the first months of the year 2006, the version 1.0 of VALLE® (Virtual roAd modeLLEr) is being implanted in the Company. DRAGADOS’ intention was to merge in VALLE® the technical and interactive capacities of a Civil Engineering Computer Aided Design application (like InRoads, Civil 3D, etc.) with the graphic and realistic capacities of Virtual Representation software (such as Virtual Map, RDV or similar) so that the user could directly test modifications of horizontal alignments, profiles, sections or other elements in an interactive and realistic way. The ability of editing the road layout in a realistic representation of the environment makes VALLE® a valuable aid in the decision making process related to highway design.