Home / Newfoundland and Labrador / Questions / Road Signs Road Signs Report A yellow diamond with a truck-bottom icon warns: A Road work B Low ground clearance — long vehicles may scrape C Detour D Weight limit Show Answer & Explanation Correct Answer: B. Low ground clearance — long vehicles may scrape Commercial drivers attention. Previous Next More Road Signs Questions A red eight-sided (octagon) sign in Newfoundland and Labrador means: A right-arrow crossed by a red slash means: A left-arrow crossed by a red slash means: A yellow diamond with two vertical up/down arrows means: A red circle with a diagonal X means: Often Missed All Newfoundland and Labrador Questions Smart Practice Mock Exam Road Signs Guide