Home / Manitoba / Questions / Road Signs Road Signs Report Yellow diamond with falling rocks: A Construction B Falling rocks from cliff C Uneven surface D Road closed Show Answer & Explanation Correct Answer: B. Falling rocks from cliff Common in Whiteshell and Riding Mountain. Previous Next More Road Signs Questions Yellow diamond with truck on grade: Yellow diamond reading 'ROUGH ROAD': Yellow diamond reading 'LOOSE GRAVEL': Yellow diamond reading 'SOFT SHOULDER': Yellow diamond with edge drop: Often Missed All Manitoba Questions Smart Practice Mock Exam Road Signs Guide