Home / Manitoba / Questions / Road Signs Road Signs Report A red octagonal sign means: A Yield B Stop C No entry D Caution Show Answer & Explanation Correct Answer: B. Stop Octagon shape recognizable by feel alone in low visibility. Next More Road Signs Questions White diamond on blue background: Yellow diamond with moose: Yellow diamond with cow: Yellow diamond with falling rocks: Yellow diamond with skidding car: Often Missed All Manitoba Questions Smart Practice Mock Exam Road Signs Guide