FIG 2-3-40 Destination Sign for Different Taxiing Routes to Two Runways 2-3-12. Information Signs Information signs have a yellow background with a black inscription. They are used to provide the pilot with information on such things as areas that cannot be seen from the control tower, applicable radio frequencies, and noise abatement procedures. The airport operator determines the need, size, and location for these signs. 2-3-13. Runway Distance Remaining Signs Runway distance remaining signs have a black background with a white numeral inscription and may be installed along one or both side(s) of the runway. The number on the signs indicates the distance (in thousands of feet) of landing runway remaining. The last sign (i.e., the sign with the numeral "1") will be located at least 950 feet from the runway end. FIG 2-3-41 shows an example of a runway distance remaining sign. Airport Marking Aids and Signs FIG 2-3-41 Runway Distance Remaining Sign Indicating 3,000 feet of Runway Remaining 2-3-29