Aviation obstruction light is a vital lighting device to guide pilots to avoid obstacles above the ground level. Tower cranes such as hammerhead cranes and luffing tower cranes are the most common sight for building tall structures such as skyscrapers. For tower cranes with painting aviation yellow, red, or alternative red and yellow, red obstruction lights are the most suitable for night aviation safety. For tower cranes without aviation painting, red/white medium intensity dual obstruction lighting system is recommended to illuminate white light at daytime and red light at nighttime.
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