The object of study in this paper will examine whether factors such as speed design (width of carriageway, berms, radios minimum, maximum and minimum slopes, camber etc) may influence as data from which to request resources and compare the cost varies between these and if build the road at speed design significantly change the cost-benefit ratio. Geometric design manuals recommend certain design features to structure new projects, renovation, or improvement of roads, for that reason each route must be seen as independent, and if possible with at least two different speeds. The stretch of study will be the construction of a road in the department of Sucre between the municipalities of Chalan - La Ceiba - La Union, analyzed at three speeds, this road is chosen to be a broker who has hilly and undulating topography that allow demarcate easily change between low and high speeds. It will also serve as a supporting document for processing resources and feasibility.