The graphic symbols that indicate the function of the commands and controls of the agricultural machines, keep its safer operation. Therefore, this work had as objective, the identification of the existent ones in the available agricultural machines in the four principal concessionary of Santa Maria City - RS, Brazil, the rising were used as parameter, the graphic symbols recommended in the standards, and the existent ones in the studied machines were photographed and later logged in a spreadsheet. The conformities and nonconformities found were contained in a table for better visualization. The result found was average of 86%, in relation to the use of the graphic symbols recommended by the standards, however, there is the use of graphic symbols also created by the own company, what generates doubts in the operator of the agricultural machine, because not always the meaning of the same ones coincides with described in the standards. The results demonstrated that the fabricator of agricultural machines studied use the existent standards, fact this that leads the equality lack among the market placed products.
ergonomics; standards; graphic symbols
