The Manila Light Rail Transit System, popularly and informally known as the LRT, is a metropolitan rail system serving the Metro Manila area in the Philippines. Although referred to as a light rail system because it originally used light rail vehicles, it has characteristics that make it more akin to a rapid transit (metro) system, such as high passenger throughput, exclusive right-of-way and later use of full metro rolling stock. The system is operated by the Light Rail Transit Authority (LRTA), a government-owned and controlled corporation under the authority of the Department of Transportation and Communications (DOTC). Along with the Manila Metro Rail Transit System (MRT-3, also called the new Yellow Line), and Philippine National Railways's commuter line, the system makes up Metro Manila's rail infrastructure.