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SESK: Stuff Everyone Should Know · sesk.info/pilot-taxiway-edge-lights-blue

At night, what color are taxiway edge lights?

Blue.

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  1. Blue ✔
  2. White
  3. Green

Why: Taxiway edge lights outline taxiways at night or in low visibility, and they shine blue. Runway edge lights are white, and green lights mark a runway threshold.

Huh, didn't know that: At many major airports, controllers can adjust taxiway light brightness when a pilot asks.

The dad joke
Why are taxiway lights blue? Because waiting for takeoff can be a little sad.
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References

Answer: Blue. Taxiway edge lights outline taxiways at night or in low visibility, and they shine blue. Runway edge lights are white, and green lights mark a runway threshold.

  1. AIM Chapter 2 Section 1, Airport Lighting Aids www.faa.gov/air_traffic/publications/atpubs/aim_html/chap2_section_1.html
    Taxiway edge lights are used to outline the edges of taxiways during periods of darkness or restricted visibility conditions. These fixtures emit blue light.
    Checked 2026-10-09.

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