Home / Nova Scotia / Questions / Rules of the Road Rules of the Road Report After impaired conviction, interlock device prevents driving if: A Any reason B Any detectable alcohol in breath C If engine is cold D If speed over 100 Show Answer & Explanation Correct Answer: B. Any detectable alcohol in breath Periodic re-tests while driving. Previous Next More Rules of the Road Questions Bicycle reflective gear placement: Tire rotation interval for even wear: Brake pads in NS should be: NS vehicle inspection covers: Signs of suspension problems in NS driving: Often Missed All Nova Scotia Questions Smart Practice Mock Exam Road Signs Guide