Home / Manitoba / Questions / Rules of the Road Rules of the Road Report Winter tires tread 3 mm; should you: A Keep using B Replace — below 4 mm compromises winter grip C Buy all-season D Only in mountain Show Answer & Explanation Correct Answer: B. Replace — below 4 mm compromises winter grip All-seasons hardens in cold. Previous Next More Rules of the Road Questions GDL driver with detectable alcohol — immediate action: BAC 0.05–0.079 first offence — sanction: Minimum learner stage before Intermediate: Intermediate (Class 5I) stage minimum: Manitoba Class 5L (learner) minimum age: Often Missed All Manitoba Questions Smart Practice Mock Exam Road Signs Guide
