8/15/19 AIM  FIG 2 − 3 − 24 Runway Holding Position Sign FIG 2 − 3 − 25 Holding Position Sign at Beginning of Takeoff Runway 2 − 3 − 8. Mandatory Instruction Signs a. These signs have a red background with a white inscription and are used to denote: 1. An entrance to a runway or critical area; and 2. Areas where an aircraft is prohibited from entering. b. Typical mandatory signs and applications are: 1. Runway Holding Position Sign. This sign is located at the holding position on taxiways that intersect a runway or on runways that intersect other runways. The inscription on the sign contains the designation of the intersecting runway, as shown in FIG 2 − 3 − 24. The runway numbers on the sign are arranged to correspond to the respective runway threshold. For example, “15 − 33” indicates that the threshold for Runway 15 is to the left and the threshold for Runway 33 is to the right. (a) On taxiways that intersect the beginning of the takeoff runway, only the designation of the takeoff runway may appear on the sign (as shown in FIG 2 − 3 − 25), while all other signs will have the designation of both runway directions. Airport Marking Aids and Signs 2 − 3 − 20