What type of light is used for structures of less than 500 ft?

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Multiple Choice

What type of light is used for structures of less than 500 ft?

Obstruction lighting is chosen to maximize visibility based on how tall the structure is. For structures under 500 feet, medium-intensity flashing white lights provide a clear, noticeable signal that works well in both day and night conditions without excessive glare or power use. The flashing pattern helps pilots quickly detect the obstacle amid other lights and terrain, making it easier to gauge position and altitude. High-intensity flashing white lights are typically reserved for taller, higher-risk obstructions where stronger signaling is needed, while steady-burning lights and red strobes are used in different marking schemes that don’t fit this height category.

Obstruction lighting is chosen to maximize visibility based on how tall the structure is. For structures under 500 feet, medium-intensity flashing white lights provide a clear, noticeable signal that works well in both day and night conditions without excessive glare or power use. The flashing pattern helps pilots quickly detect the obstacle amid other lights and terrain, making it easier to gauge position and altitude. High-intensity flashing white lights are typically reserved for taller, higher-risk obstructions where stronger signaling is needed, while steady-burning lights and red strobes are used in different marking schemes that don’t fit this height category.

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