Colas SA is a France-based company that specializes in the construction and maintenance of road, air, rail and maritime transportation infrastructure. The Company's core activities include construction and maintenance of roads, highways, airport runways, port, industrial and logistics infrastructure, bus and tramways, urban transport and recreational facilities, bicycle paths, and more. Colas SA is also engaged in the manufacture and recycling of construction materials, including aggregates, asphalt mixes and ready-to-use concrete via an extensive international network of quarries and emulsion, asphalt and concrete plants. Its building business comprise of new construction and refurbishment of buildings. Moreover the Company manufactures and sells bitumen, signage, safety and traffic management systems and offers a range of services, including waterproofing and roofing, among others. The Company's major shareholder is Bouygues SA. In February 2014, it sold 16.67% stake in Cofiroute.