← All explained questions · Airports, Runways, Signs, Markings and Lighting
What color scheme identifies a mandatory instruction sign, such as a runway holding position sign?
Choices
✓ White text on a red backgroundcorrect
Mandatory instruction signs are white lettering on red and require a clearance to proceed.
Yellow text on a black background
That describes a location sign.
Black text on a yellow background
That describes a direction or destination sign.
White text on a blue background
Blue is not used for mandatory instruction signs.
Why
Mandatory instruction signs have white text on a red background and mark entrances to runways or critical areas where a clearance is required.
FAA source: AIM 2-3-8browse the reference library →
Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.