UFC 3-535-01
17 November 2005
9-1.3.5
Runway Distance Markers
White legend on black background, with a single number indicating in multiples of 1,000
feet the remaining runway distance for pilots during takeoff and landing operations.
Metric measure is not used for this sign. (FAA Type L-858B)
9-1.3.6
Arresting Gear Markers
Yellow circle on black background, identifying the location of arresting system cables on
the runway. (Similar to FAA Type L-858B)
9-1.3.7
Other Signs
Other signs serving special situations may be used, provided they do not conflict with
the sign standards, or have the potential for confusing ground traffic with respect to
standard signing. Vehicle control signs conforming to the Manual of Uniform Traffic
Control Devices (MUTCD) (Air Force use AFPAM 32-1097, Sign Standards Pamphlet),
such as the standard octagonal stop sign, may be used at locations that would apply
only to vehicles.
9-2
MANDATORY SIGNS
9-2.1
Purpose
Mandatory signs provide instruction that must be followed. They denote an entrance to
a runway or critical area, or other situation such as a no-entry location. At controlled
airfields (with active tower), aircraft and vehicles are required to hold unless cleared by
air traffic control. At uncontrolled airfields, the intent is that traffic may only proceed
beyond the sign after appropriate precautions are taken. Examples of mandatory sign
messages are shown in Figure 9-1.
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