How far apart are taxiway lights on straights and curves?
Wider spacing on the straights, closer spacing round the bend so the line of light stays clear.
Taxiway centreline lights are not more than 30 m apart on a straight (ICAO Annex 14), or 15 m or less on taxiways for use in RVR below 350 m. Larger spacing, up to 60 m, is allowed where conditions give sufficient guidance.
On a curve the lights are spaced closer so the bend is clearly shown, and they continue from the straight at a constant distance from the outside edge of the curve.
About 15 m or 30 m apart. See Entry 33.
Up to 30 m on straights, closer on curves.
Frequently Asked Questions
Q1How far apart are taxiway centreline lights on a straight?
ICAO Annex 14 Volume I sets a maximum of 30 m on straight sections. Larger spacing, up to 60 m, is allowed where the meteorological conditions give sufficient guidance, and closer spacing is used on short straights.
Q2What changes for low-visibility taxiways?
On a taxiway intended for use in RVR below 350 m the straight-section spacing is 15 m or less, so the pilot always sees a continuous line of light.
Q3Why are lights closer together on curves?
On a bend the pilot sees the line from an angle and a wide spacing makes the curve look like a series of straight kinks. Closer spacing gives a clear indication of the curve. ICAO Annex 14 steps the maximum interval down with radius: 7.5 m for a radius of 400 m or less, 15 m for 401 to 899 m, and 30 m for 900 m or more. Confirm the figures in the edition in force.
Q4Where do the lights sit on a curve?
The curve lights continue from the straight section at a constant distance from the outside edge of the curve, so the line of light follows the bend smoothly.
Q5Can the spacing change along a taxiway?
Yes. Straights and curves have different intervals. Keep the change gradual where you can, and keep the spacing uniform within each section.
Q6Where is taxiway light spacing defined?
In ICAO Annex 14 Volume I (Chapter 5, taxiway centre line lights) and the Aerodrome Design Manual Part 4, and for FAA-regulated airports in FAA AC 150/5340-30 and the project specification. Always confirm against the current edition.
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