Home / Manitoba / Questions / Road Signs Road Signs Report Solid white line at edge of road: A Centreline B Right edge of road (shoulder boundary) C Bike lane D No passing Show Answer & Explanation Correct Answer: B. Right edge of road (shoulder boundary) Useful in fog / snow for alignment. Previous Next More Road Signs Questions White diamond on blue background: White lines separate lanes of: Solid yellow line on your side (broken on other): Broken yellow centreline: Double solid yellow centreline: Often Missed All Manitoba Questions Smart Practice Mock Exam Road Signs Guide