Explained: Why Telecom Masts and Booster Towers Are Painted Red and White

Telecommunications masts and booster towers are often painted in alternating red and white bands to help pilots spot them and avoid collisions, particularly when flying at low altitudes. The article says ICAO rules require structures taller than 45 metres to be painted in highly visible colours and fitted with warning lights or signs, depending on their height and location. Alternating bands improve depth perception and help pilots estimate a tower’s height, while obstruction lights, often red, are used at night or in fog. Other highly visible colours, such as orange, may also be used.