toilet water from used toilet water, and illumination technology control to illuminate the terminal depending on the weather surrounding the terminal. Terminal 3 will be able to serve 60 airplanes from the current 40 airplanes. Terminal 4 Angkasa Pura II has undertaken a plan to build Terminal 4, which will be located on the north side of runway 1, south of Terminal 3, and east of Terminal 1. Terminal 4 will be built at the 4th stage as part of the development of the airport. The terminal will be built on 130 hectares of land, which will be able to serve 45 million passengers annually. The terminal will be designed in the form of an 'H' and use eco-friendly and modern design, similar to the design of Terminal 3. The terminal is expected to be operational by 2024. Freight terminal The freight terminal is located on the east side of terminal 1. This terminal was used to handle cargo at the Soekarno–Hatta International Airport, both domestic and international cargo. In the latest master plan, the freight terminal will move to the west side of terminal 2 and have a larger capacity. Navigation aids Runway 07L/25R and 07R/25L are equipped with Instrument Landing System (ILS). The runways are also equipped with VOR/DME. Airlines and destinations Passenger Ethiopian Airlines flights from Jakarta to Addis Ababa make a stop at Bangkok. However, the airline has no fifth freedom rights to carry passengers solely between Jakarta and Bangkok. Cargo Busiest routes Jakarta–Singapore is one of the world's busiest international air routes; passenger numbers of this route is growing fast. It was the second busiest international route in Asia after Hong Kong–Taipei in 2015. Singapore Airlines alone operates more than 70 weekly flights between Jakarta & Singapore. Jakarta Soekarno-Hatta–Surabaya route is ranked ninth busiest in the world by IATA in 2016. Jakarta–Singapore, and Jakarta–Kuala Lumpur routes are ranked within the top ten of world's busiest international air routes in 2018. New traffic procedure To ease congestion, the airport authority implemented a new traffic procedure, the 72 Improved Runway Capacity (IRC 72), to handle 72 planes per hour. This limited a plane to 30–45 minutes only for arrival and unloading of passengers, to allow other planes to use the parking space. Gradually it has been implemented and on 26 June 2014 IRC 72 has been implemented fully for the period of 00:00 am to 01:30 am,