List the four major categories of airside signs and their general purposes.

• A. Mandatory instruction signs indicate required actions; direction signs guide routes to destinations; information signs provide general airport information; location signs identify your current taxiway or position.
• B. Stop signs, yield signs, speed limit signs, pedestrian signs.
• C. Warning signs, regulatory signs, guide signs, construction signs.
• D. Information signs indicate restrictions; location signs guide runway directions; mandatory signs provide maps; direction signs mark exits.

Answer: (A)