An editor has determined thatsufficient sources exist to establish the subject'snotability. Please helpimprove this article byadding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Air traffic obstacle" – news ·newspapers ·books ·scholar ·JSTOR(January 2025) (Learn how and when to remove this message) |

AnAir traffic obstacle is a tall structure which can endanger air traffic. Air traffic obstacles have to be marked in most cases with red and white colored markings and withaircraft warning lights at night. On larger structures blinking lights are required. An example of an air traffic obstacle is theair traffic control tower.
In the past lamps similar to those used on lighthouses were sometimes used. There are still such lamps onFernsehturm Stuttgart in Stuttgart, Germany. A fainter rotating light is onBlosenbergturm,Beromünster, Switzerland.
A special method of marking was used at the mast ofDeutschlandsender Herzberg/Elster in 1939. On small poles near the mast multiple rotating skybeamers were mounted which illuminated the lens-like structure on the top. Because of this no electrical installation was required on this mast.