CAT II/III runway holding position signs are an example of which sign type?

• A. Mandatory Instruction Signs
• B. No Entry Signs
• C. Direction Sign Array
• D. Runway Exit Signs

Answer: (A)

The sign at a CAT II/III runway hold position is a mandatory instruction sign. These signs convey a direct command that the aircraft must stop and hold short of the runway at the designated point, which is crucial for maintaining safety and proper separation during precision approaches in low visibility. The hold position sign is designed to stand out as a required action, typically with a distinctive appearance that signals pilots must comply.

This isn’t a No Entry sign, which would indicate that entry is prohibited. It’s not a Direction Sign Array, which provides routing information with arrows to guide taxiing. It’s not a Runway Exit Sign, which marks where you can exit onto a taxiway after leaving the runway. In short, the hold position sign’s purpose is to command a hold, aligning with the category of mandatory instruction signs that require immediate compliance.