In order to make it easier for pilots to observe whether there are planes around them at any time and understand the relationship between other planes and their own course, three navigation lights should be turned on on the left and right sides of the plane and the tail when flying at night. From the pilot's position, the red light is always installed at the left wing tip, the green light is installed at the right wing tip, and the white light is installed at the tail wing. The three light zones can be lit continuously or intermittently.
It is convenient for the pilot to observe the situation after the night flight plane turns on the navigation light. If the pilot sees a plane at the same height as himself, and only sees two traffic lights, it means that the other side is coming face to face and is in danger of collision, so he must avoid it.
If you only see a light, it means that the other person is on his left or right; If you can see three light areas at the same time, it means that the other party is flying above or below itself, and there is no danger in either case.
Extended data:
Route rule
There is no way to install traffic lights on land on the route, but there is indeed a group of "invisible traffic lights" on the route.
This set of air traffic lights consists of navigation equipment, radar system, secondary radar, communication equipment and ground control center. With the help of this set of traffic lights, air traffic controllers on the ground can monitor, identify and guide the aircraft in the coverage area to ensure their normal and safe flight.
Flight route airspace is divided into different management airspace, including route, flight information management area, approach management area, tower management area and waiting airspace management area. Air traffic controllers in different positions have their own duties.
After World War II, with the increase of the number of aircraft, the pressure of air traffic control has become unprecedented. Because no matter the size of the plane, it is basically necessary to slow down and use the runway for at least 3 minutes after landing.
If the runway needs to be used by planes taking off and landing at the same time, it can only take off and land more than 20 flights per hour. Even an average international airport can only take off and land 40-50 flights when the runway is diverted.
Even so, planes entering and leaving the runway will still fill the taxiway, causing other airports to stop running, which will seriously make it impossible for planes in the air to land safely.
People's Network-Revealing air traffic rules and air traffic control in various countries.
Changping Science Popularization Network-Why should the plane be equipped with "traffic lights"