The MetrobusQ network, also known as "Red Integrada de Transporte Público", is the bus rapid transit system running in Quito, and it goes through the city from south to north. It's divided into three sections—the green line (the central trolleybus, known as ''El Trole''), the red line (the north-east Ecovía), and the blue line (the north-west Corridor Central). In addition to the bus rapid transit system, there are many buses running in the city. The buses have both a name and a number, and they have a fixed route. Taxi cabs are all yellow, and they have meters that show the fare. There are nearly 8,800 registered taxicabs.