Home / New Brunswick / Questions / Rules of the Road Rules of the Road Report Idling modern vehicles to warm up: A Required 10 minutes B 30-60 seconds enough; drive gently C Required for hours D Never drive cold Show Answer & Explanation Correct Answer: B. 30-60 seconds enough; drive gently Excessive idling wastes fuel. Previous Next More Rules of the Road Questions Ambulance approaches from behind with siren: Bus boarding/discharging at transit stop: Low overpass signed 3.5 m — your truck is 3.8 m: Transit bus yield signal to re-enter lane: Flagger holds red 'STOP' paddle: Often Missed All New Brunswick Questions Smart Practice Mock Exam Road Signs Guide