Home / Manitoba / Questions / Road Signs Road Signs Report Broken white line between lanes: A No lane change B Lane change allowed when safe C Bike lane D Shoulder Show Answer & Explanation Correct Answer: B. Lane change allowed when safe Solid white discourages lane changes. Previous Next More Road Signs Questions White diamond on blue background: Green sign with truck and arrow: Blue sign with bus silhouette: Blue square with airplane: Yellow diamond with long vehicle / bump: Often Missed All Manitoba Questions Smart Practice Mock Exam Road Signs Guide