Page 385 - Planning and Design of Airports

336 Airp o r t D e sign

FIGURE 8-36 Taxiway ending marker.

Information Signs
Other types of signs may be necessary on the airfield which are not
part of the taxiway guidance systems described before. These signs
are called information signs and might be used, for example, to indicate
a noise abatement procedure to a pilot ready to takeoff on a specific
runway. These signs should have black inscriptions on a yellow back-
ground. These signs are not required to be lighted.

Taxiway Ending Sign
The sign system does not provide a sign to indicate that a taxiway
does not continue beyond an intersection. A frangible, retroreflective
sign should be installed on the far side of the intersection if normal
visual cues such as marking and lighting are inadequate. This sign is
marked with alternating black and yellow diagonal stripes, as illus-
trated in Fig. 8-36.
The FAA recommends that the following guidelines be applied
when designing a taxiway guidance sign system [25]:
1. A holding position sign and taxiway location sign should be
installed at the holding position on any taxiway that provides
access to a runway.
2. A holding position sign should be installed on any taxiway at
the boundary of the instrument landing system critical area
or the runway approach area when it is necessary to protect
the navigational signal, airspace, or safety area for a runway.
This sign should be placed at the entrance to and the exit from
such areas.
3. A holding position sign should be installed on any runway
where that runway intersects another runway.
4. A sign array consisting of taxiway direction signs should be
installed prior to each intersection between taxiways if an air-
craft would normally be expected to turn at or hold short of
the intersection. The direction sign in the array should include
a sign panel, consisting of a taxiway designation and an arrow,
for each taxiway that an aircraft would be expected to turn
onto or hold short. A taxiway location sign should be included
as part of the sign array unless it is determined to be unneces-
sary. If an aircraft normally would not be expected to turn at