AIM 

4/20/23 

FIG 2

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10 

Taxi Shoulder Markings 

RUNWAY 

YELLOW STRIPES 

PAVEMENT EDGE 

TAXIWAY EDGE 
MARKINGS 

f.  Surface Painted Location Signs. 

Surface painted location signs have a black background with a yellow 

inscription. When necessary, these markings are used to supplement location signs located along side the taxiway 

and assist the pilot in confirming the designation of the taxiway on which the aircraft is located. These markings 

are located on the right side of the centerline. (See FIG 2

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11.) 

g.  Geographic Position Markings. 

These markings are located at points along low visibility taxi routes 

designated in the airport’s Surface Movement Guidance Control System (SMGCS) plan. They are used to 

identify the location of taxiing aircraft during low visibility operations. Low visibility operations are those that 

occur when the runway visible range (RVR) is below 1200 feet (360m). They are positioned to the left of the 

taxiway centerline in the direction of taxiing. (See FIG 2

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12.) The geographic position marking is a circle 

comprised of an outer black ring contiguous to a white ring with a pink circle in the middle. When installed on 

asphalt or other dark-colored pavements, the white ring and the black ring are reversed (i.e., the white ring 

becomes the outer ring and the black ring becomes the inner ring). It is designated with either a number or a 

number and letter. The number corresponds to the consecutive position of the marking on the route. 

Airport Marking Aids and Signs

2

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12