![x plane 11 aircraft parked x plane 11 aircraft parked](https://gateway.x-plane.com/images/airports/LKPR/1603500938790-981451679.jpg)
This is done by ensuring that the rules for different runways are different. The official documentation clearly says “The first flow to ‘pass’ will be used” so how is it possible to have multiple runways operating? Many larger airports will have different runways for different purposes, or parallel runways, in use at the same time. One are that seems to cause some confusion is multiple runways in use. The flows are tested in order and the first matching flow is used. Larger airports will usually use predefined “flows” sets of rules that determine which runways are in use, depending on various conditions. Traffic Global uses exactly the same rules as X-Plane does when deciding on the runway-in-use.
![x plane 11 aircraft parked x plane 11 aircraft parked](https://assets-global.website-files.com/5b27a494dc3d312fe5c01da8/6018a7d8eb368c2fdb830735_254893_CirrusSF50_-_2021-01-30_5.36.00_PM.png)
WED) and those changes uploaded the X-Plane Scenery Gateway, for the whole community to benefit, whether they use Traffic Global or not.
![x plane 11 aircraft parked x plane 11 aircraft parked](https://www.flightsim.news/wp-content/uploads/2018/07/shortfinal-design-los-angeles-klax-xp11.jpg)
If an airport does need modifications, this work can be done with existing and well-understood tools (i.e. Although this does impose some restrictions, the benefits are that most existing airports work, at least to some extent, with no further changes or downloads required. All the data needed comes directly from files that are required by X-Plane itself and would be fully used by X-Plane itself. One of the key design decisions in Traffic Global was to avoid using any additional files to help with navigation, and to avoid any special, Traffic Global-specific rules or encodings.