Home / Manitoba / Questions / Rules of the Road Rules of the Road Report Idling extended minutes in cold to warm car: A Recommended B Modern engines only need 30–60 s idle; drive gently C Always 10 min D Never drive cold Show Answer & Explanation Correct Answer: B. Modern engines only need 30–60 s idle; drive gently Excessive idling wastes fuel. Previous Next More Rules of the Road Questions Photo radar ticket: Stop sign requires: Flashing hand with countdown at crosswalk: Motorcycle helmet: Drug / cannabis impaired driving: Often Missed All Manitoba Questions Smart Practice Mock Exam Road Signs Guide