Empresas ICA S.A.B de C.V. - ADR operates in the Highway and street construction sector. Empresas ICA SAB de CV is a Mexico-based company that, along with its subsidiaries, is primarily engaged in the engineering and construction sector. Its activities are structured in three business lines: Construction, which is involved in civil and industrial construction projects; Infrastracture Operation, which specializes in the construction, maintenance and operation of airports, highways and water projects, and Homebuilding, which is focused on the social interest housing and middle income residential development. As of December 31, 2010, the Company owned such subsidiaries as Constructoras ICA SA de CV, Controladora de Empresas de Vivienda SA de CV, Controladora de Operaciones de Infraestructura SA de CV, ICA Panama SA and Grupo Aeroportuario del Centro Norte SAB de CV, among others.