Colas SA engages in the construction and maintenance of roads and infrastructures. It operates through the following segments: Roads Mainland France, Roads Europe, Roads North America, Roads Rest of the World, Specialized Activities, and Parent Company. The Roads Mainland France segment includes the road activities in mainland France. The Roads Europe segment comprises road activities in Europe (excluding France). The Roads North America segment covers road activities in the United States and Canada. The Roads Rest of the world segment focuses on road activities in Africa, North Africa, Indian Ocean, French Overseas Departments and Territories, Asia/Australia, and Middle-East. The Specialized Activities segment gives specialized activities for France and elsewhere around the world: Waterproofing, Railways, Safety, and Signaling, Networks. The Parent company segment involves in the Head Office of Colas. The company was founded in 1929 and is headquartered in Boulogne-Billancourt, France.