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According to ICAO Annex 14, what is the purpose of taxiway widening on curved segments?
  • A
    To be an area adjacent to the edge of a pavement, so prepared as to provide a transition between the pavement and the adjacent surface.
  • B
    To protect an aircraft operating on the taxiway and to reduce the risk of damage to an aircraft accidentally running off the taxiway.
  • C
    To provide clearance between the outer main wheels of the aeroplane and the edge of the taxiway.
  • D
    To provide a surface able to resist erosion and the ingestion of the surface.

Refer to figure.
ICAO Annex 14
Taxiway curves

3.9.5 Recommendation.— Changes in direction of taxiways should be as few and small as possible. The radii of the curves should be compatible with the manoeuvring capability and normal taxiing speeds of the aeroplanes for which the taxiway is intended. The design of the curve should be such that, when the cockpit of the aeroplane remains over the taxiway centre line markings, the clearance distance between the outer main wheels of the aeroplane and the edge of the taxiway should not be less than those specified in 3.9.3.

Note 1.— An example of widening taxiways to achieve the wheel clearance specified is illustrated in Figure 3-2. Guidance on the values of suitable dimensions is given in the Aerodrome Design Manual (Doc 9157), Part 2.

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