PROCEDURES FOR LOW VISIBILITY OPERATIONS

Control of aerodrome surface traffic
in conditions of low visibility
 Note.— These procedures apply whenever conditions are such that all or part of the manoeuvring area cannot be
visually monitored from the control tower. Additional requirements which apply when category II/III approaches are
being conducted are specified in Section .
When there is a requirement for traffic to operate on the manoeuvring area in conditions of visibility
which prevent the aerodrome control tower from applying visual separation between aircraft, and between aircraft and
vehicles, the following shall apply:
 At the intersection of taxiways, an aircraft or vehicle on a taxiway shall not be permitted to hold closer to
the other taxiway than the holding position limit defined by a clearance bar, stop bar or taxiway intersection marking
according to the specifications in Annex 14, Volume I, Chapter 5.
 The longitudinal separation on taxiways shall be as specified for each particular aerodrome by the
appropriate ATS authority. This separation shall take into account the characteristics of the aids available for surveillance
and control of ground traffic, the complexity of the aerodrome layout and the characteristics of the aircraft using the
aerodrome.
 Note.— The Manual of Surface Movement Guidance and Control Systems (SMGCS) (Doc 9476) provides guidance
on surface movement guidance and control components and procedures for low visibility operations.