Amongst these occurrences it is identified that forty and two are related the falling events and a related occurrence the capotamento. What also it can be related to the fact of the state of Minas Gerais to be characterized by a sufficiently mountainous relief. The state of Minas Gerais is situated in a plateaus area, with altitudes that vary of one hundred a thousand and five hundred meters. Great part of the state bes situated in Atlantic Plateaus, with a relief of wavy topos what it characterizes ' ' seas of mounts, with average altitudes of seven hundred meters (JAMES & MENDES 2005/2006) The accidents identified in the year of 2009 if fit in classroom 3 (Liquid Inflammable) and classroom 4 (Solid Inflammable) for order of bigger occurrence. Alteia that in the year of 2009, it more than had an addition of 300% in relation to the previous years, being registered forty and three accidents, of this total 99% they had occurred for falling. These data become preoccupying, therefore they are potentially .causing of some type of ambient damage, that can to reach half the physicists, bitico and economic partner. The accidents had occurred next the areas to great urban concentrations had the proximity and characteristics of the cities where it had the accidents, and as in this type of accident, the direct consequence is of if having emptying and or spilling of the carried chemical product. Being thus, the bordering areas of the highways, that are its areas of influence, directly are affected, being able to reach the ground and courses d? water, that porventura will be to the edges of the highways and also the populations that if to concentrate in the neighborhoods. Had to the highways to have its tracing the same following passage of courses d? water, that many times supply some cities and are used, also, for irrigation of agricultveis areas.