The ”L” and ”R” designate the relative position (left or right) of each runway respectively when approaching/facing its direction. A small number of airports have three parallel runways—the runway in the middle gets a “C” for center.
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Essentially, the RWYCC is a number, from 0 to 6, which represents the slipperiness of a specific third of a runway and provides a standardized “shorthand” for reporting this information. A RWYCC of 0 corresponds to an extremely slippery runway and 6 corresponds to a dry runway.
Departing from Runway 18L means that you are heading South. However, on the same runway, if the aircraft was taking off in the opposite direction, it means that it was heading North at heading 360 degrees. (Heading 360 degrees is reciprocal or opposite of heading 180 degrees).
For code, F ICAO to be 155 meters specifies aircraft the width of the lower surface. The justification used is that not only the wingspan is 20 meters larger (on initial code E 60 meters) but also the runway width is 15 meters larger (60 meters code E).
So what do these numbers on runways mean? The numbers on the runway, officially known as designators, indicate the runway heading, always in magnetic degrees and rounded to the nearest ten. So, if the magnetic bearing is 73º, the runway will be designated with the numbers 07.
Runway numbers are actually a reference to the closest magnetic heading of the runway. The runway heading is rounded to the nearest 10 degrees, and the zero is removed. This number is then assigned to the runway. Further differentiation can be achieved with letters on parallel runways.
As Atlas Obscura explains, the numbers that runways have aren't arbitrary. A runway always has a number between 1 and 36, and that number isn't just the runway's nickname, but also indicates how many degrees away that runway is from magnetic north, rounded to the tens.
The most used is the Instrument Landing System or ILS. The ILS consists of two radio beams which project up from the area around the runway up into the approach path. These signals are then picked up in the aircraft by the ILS receiver which displays them on the screens in the flight deck.
Since most runways are oriented to take advantage of prevailing winds to assist in takeoffs and landings, they can be used either direction. This is why most runways have two numbers. The second number differs by 18 or 180 degrees.
The airfield is managed by three FAA air traffic control towers. O'Hare has a voluntary nighttime (22:00–07:00) noise abatement program. Currently, O'Hare has the most runways of any civilian airport in the world, totaling eight.
Shigatse Peace Airport, China (runway length: 5,000m)Shigatse Peace Airport (RKZ), a dual-use military and civilian airport in Shigatse, Tibet hosts the longest runway in the world. The new runway (09/27) stretches 5,000m (16,404 ft) long with a 60-meter asphalt overrun at each end.
Single Physical RunwaysNorth-oriented runways are designated 36 (not 00). In simple words, the runway designator represents the heading used for taking off or landing at the runway. If the runway is used in both directions, then each of them receives its own designator.
The wind in the UK is fairly constant east-west, thus there is no need to construct runways in other directions. The only reason to construct extra runways, is for the case where the capacity of the current runway system is insufficient.
Dallas Fort Worth International AirportLocated between two major cities, the airport began operation in 1974, and features seven runways to service planes of varying sizes. This airport can also accommodate triple parallel landings.