Home / Manitoba / Questions / Rules of the Road Rules of the Road Report Before changing lanes must: A Only mirrors B Mirrors + shoulder (blind-spot) check C Honk D Flash Show Answer & Explanation Correct Answer: B. Mirrors + shoulder (blind-spot) check Prevents collision with vehicle in blind spot. Previous Next More Rules of the Road Questions Entering a roundabout: Left turn across oncoming traffic: Uncontrolled intersection (no signs/signals): Dim high beams when oncoming vehicle within: Daytime running lights (DRL) alone at night: Often Missed All Manitoba Questions Smart Practice Mock Exam Road Signs Guide