Home / Manitoba / Questions / Road Signs Road Signs Report Yellow diamond with truck on grade: A Speed zone B Steep hill / grade ahead C Slow-moving vehicles D Load limit Show Answer & Explanation Correct Answer: B. Steep hill / grade ahead Grade percentage may be posted. Previous Next More Road Signs Questions White diamond on blue background: Green sign with truck and arrow: Sign reading 'WIDTH 3 m': Sign reading 'HEIGHT LIMIT 4 m': Sign reading 'LOAD LIMIT 10 T': Often Missed All Manitoba Questions Smart Practice Mock Exam Road Signs Guide