Home / Newfoundland and Labrador / Questions / Road Signs Road Signs Report A blue square with an airplane means: A Airport or aerodrome nearby B Military base C Air rifle range D Balloon festival Show Answer & Explanation Correct Answer: A. Airport or aerodrome nearby Blue service sign with aircraft icon. Previous Next More Road Signs Questions A white diamond on blue background in a lane indicates: A yellow diamond with T-shape and one arrow means: A yellow diamond with T-shape road icon can mean: A yellow diamond with plus (+) road icon means: A yellow diamond with traffic-light icon means: Often Missed All Newfoundland and Labrador Questions Smart Practice Mock Exam Road Signs Guide