Home / Newfoundland and Labrador / Questions / Road Signs Road Signs Report A left-arrow crossed by a red slash means: A Mandatory left turn B No left turn at this location C Detour left D Merge left Show Answer & Explanation Correct Answer: B. No left turn at this location Reduces conflict with oncoming traffic. Previous Next More Road Signs Questions A white diamond on blue background in a lane indicates: A yellow diamond with T-shape and one arrow means: A yellow diamond with T-shape road icon can mean: A yellow diamond with plus (+) road icon means: A yellow diamond with traffic-light icon means: Often Missed All Newfoundland and Labrador Questions Smart Practice Mock Exam Road Signs Guide