Obstruction lights are typically what color and mounted where?

Obstruction lights are typically what color and mounted where?

• A. Red and mounted on tall structures
• B. White and on the ground
• C. Green and on approach lighting
• D. Yellow and on vehicles

Answer: (A)

Pilots rely on red obstruction lights to warn about tall obstacles that could be hazards to aircraft. They’re mounted on the top or most prominent part of the structure so they’re visible from all directions, day or night, making the obstacle easy to see against the sky and terrain. White lights on the ground, green lights associated with approach lighting, or yellow on vehicles don’t serve this warning purpose for airborne hazards, so they’re not correct here.

Pilots rely on red obstruction lights to warn about tall obstacles that could be hazards to aircraft. They’re mounted on the top or most prominent part of the structure so they’re visible from all directions, day or night, making the obstacle easy to see against the sky and terrain. White lights on the ground, green lights associated with approach lighting, or yellow on vehicles don’t serve this warning purpose for airborne hazards, so they’re not correct here.