CERTIFER is a French railway certification agency established in 1997. CERTIFER is a major global actor in the independent sa ... fety assessment and design checking of railway systems and guided transport (metros, trams, high speed lines). Headquartered in Valenciennes (France), CERTIFER is present in ten countries with subsidiaries in Algeria, Australia, Belgium, Brazil, France, Italy, Spain and Turkey and branch in UAE and Viet Nam. read more