After studying at the École nationale supérieure des arts décoratifs in Paris, Tallon began his career as a designer for the mining company Charbonnages de France. He went on to work for various design and production companies, including the French electrical equipment company Legrand.
In 1974, Tallon was hired to work on the design of the TGV, which has become one of the most recognizable symbols of modern France. He also designed several other transportation projects, such as the TGV Duplex trainset, as well as products for the French brands Air France and Renault.
Throughout his career, Tallon received numerous awards for his work, including the Prix de la Création Industrielle in 1983 and the Grand Prix National de la Création Industrielle in 1992.
Roger Tallon has left an important legacy in the field of industrial design in France and around the world. His work has helped shape the visual identity of modern France, and has been widely recognized for his ability to combine aesthetics with functionality.