 The Company's centralized services are Actua, Engelog, Parques Servicios and STP offering administrative centers, logistics and engineering, traffic control and monitoring, and electronic toll-charging systems, respectively.Currently the company is the largest highways operator in Latin America and through its subsidiary ViaQuatro operates the Line 4 -Yellow of São Paulo metro and the Salvador Metro.The company operates the Belo Horizonte International Airport, Quito International Airport, the San José International Airport in Costa Rica and Curaçao International Airport.