Societe des ingenieurs de l automobile (sia) is the premiere world resource for the design manufacturing operation and maintenance of automobiles space vehicles off-highway equipment trucks buses trains engines and self-propelled vehicles. the largest automotive standards-setting body in the world sia offers technical information in the form of papers books magazines meetings conferences professional development seminars workshops expositions continuing education programs and internet products. sia is committed to serving society through its vehicle safety maintenance resource conservation and education programs.sia offre l information technique sous forme de papiers de livres de magasins de réunions de conférences de conférences professionnelles de développement d ateliers d expositions de programmes de formation permanente et de produits internet.