Home / Saskatchewan / Questions / Road Signs Road Signs Report Yellow diamond with truck on grade: A Speed zone B Steep hill ahead C Slow traffic D Load limit Show Answer & Explanation Correct Answer: B. Steep hill ahead Grade % often posted. Previous Next More Road Signs Questions White diamond on blue: A red octagonal sign means: Red and white downward-pointing triangle: Red circle with horizontal white bar: Black arrow on white rectangular sign: Often Missed All Saskatchewan Questions Smart Practice Mock Exam Road Signs Guide