Home / Nova Scotia / Questions / Rules of the Road Rules of the Road Report If ABS fails during emergency braking: A Brakes don't work B Regular brakes work but may lock up; use threshold braking if possible C Must replace immediately D Car uncontrollable Show Answer & Explanation Correct Answer: B. Regular brakes work but may lock up; use threshold braking if possible Practice threshold technique. Previous Next More Rules of the Road Questions Changing a flat tire on a busy highway: A compact 'doughnut' spare tire allows: Jumping a dead battery — connection sequence: Before a long trip in NS: NS winter requires: Often Missed All Nova Scotia Questions Smart Practice Mock Exam Road Signs Guide