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with the runway centre line. b) operational procedures exist to limit, in runway visual
range conditions less than a value of 550 m, the number
5.3.1 8.2 Recommendation.- Runway turn pad lights of:
should be provided on a runway turn pad intended for use at
night. 1) aircraft on the manoeuvring area to one at a time; and
Location
2) vehicles on the manoeuvring area to the essential
minimum.
5.3.18.3 Recommendation.- Runway turn pad lights 5.3.19.2 A stop bar shall be provided at every runwayshould
normally be located on the runway turn pad marking, holding position, serving a runway when it is intended that the
Annex 14 -Aerodromes Volume I
runway will be used in runway visual range conditions of
values between 350 m and 550 m, except where:
a) appropriate aids and procedures are available to assist in
preventing inadvertent incursions of aircraft and
vehicles onto the runway; or
b) operational procedures exist to limit, in runway visual
range conditions less than a value of 550 m, the number
of:
1) aircraft on the manoeuvring area to one at a time;
and
2) vehicles on the manoeuvring area to the essential
minimum.
5.3.19.3 Recommendation.- A stop bar should be
provided at an intermediate holdingposition when it is desired
to supplement markings with lights and to provide traffic
control by visual means.
5.3.19.4 Recommendation.- Where the normal stop
bar lights might be obscured Cfrom a pilot? view), for
example, by snow or rain, or where a pilot may be required
to stop the aircraji in a position so close to the lights that they
are blockedji-om view by the structure of the aircraji, then a
pair of elevated lights should be added to each end of the
stop bar.
Location
5.3.19.5 Stop bars shall be located across the taxiway at
the point where it is desired that traffic stop. Where the
additional lights specified in 5.3.19.4 are provided, these lights
shall be located not less than 3 m from the taxiway edge.
Characteristics
5.3.19.6 Stop bars shall consist of lights spaced at
intervals of 3 m across the taxiway, showing red in the
intended direction(s) of -approach to the intersection or
runway-holding position.
5.3.19.7 . Stop bars installed at a runway-holding position
shall be hidirectional and shall show red in the direction of
approach to the runway.
5.3.19.8 Where the additional lights specified in 5.3.19.4
are provided, these lights shall have the same characteristics as
the lights in the stop bar, but shall be visible to approaching
aircraft up to the stop bar position.
5.3.19.9 Selectively switchable stop bars shall be installed
in conjunction with at least three taxiway centre line lights
(extending for a distance of at least 90 m from the stop bar) in
the direction that it is intended for an aircraft to proceed from
the stop bar.
Note.- See 5.3.16.12 for provisions concerning the spacing
of taxiway centre line lights.
5.3.19.10 The intensity in red light and beam spreads of
stop bar lights shall be in accordance with the specifications in
Appendix 2, Figures A2- 12 through A2- 16, as appropriate.
5.3.19.1 1 Recommendation.- Where s t o ~ bars are
specified as components of an advanced, sugace movement
guidance and control system and where, f i m an operational
point of view, higher intensities are required to maintain
gmundmovements at a certain speed in very low visibilities or
in bright daytime conditions, the intensity in red light and beam
spreah of stop bar lights should be in accordance' with the
specifications of Appendix 2, Figure A2-17, A2-18 or A2-19.
Note.- High-intensity stop bars should only be used in
case of an absolute necessity and following a specific study.
5.3.19.1 2 Recommendation.- Where a wide beam
fiiture is required, the intensity in red light and beam spreah
of stop bar lights should be in accordance with the
specifications of Appendix 2, Figure A2-17 or A2-19.
5.3.19.1 3 The lighting circuit shall be designed so that:
a) stop bars located across entrance taxiways are selectively
switchable;
b) stop bars located across taxiways intended to be used only
as exit taxiways are switchable selectively or in groups;
c) when a stop bar is illuminated, any taxiway centre line
lights installed beyond the stop bar shall be extinguished
for a distance of at least 90 m; and
d) stop bars shall be interlocked with the taxiway centre line
lights so that when the centre line lights beyond the stop
bar are illuminated the stop bar is extinguished and vice
versa.
Note 1.- A stop bar is switched on to indicate that traffic
　
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