Question A cardboard box on the roadway: Answers Should be expected to be on the roadway. Is usually empty and harmless. Could contain a heavy object that could damage vehicles. Explanation Almost any foreign object on the road poses some potential danger. For example, even something as seemingly harmless as a cardboard box could contain a hard or heavy object that could damage your vehicle. Take a FREE Practice Test Now This questions appears in the following tests: Alabama Knowledge Test Class A , Delaware Knowledge Test Class A , Maine Knowledge Test Class A , Rhode Island Knowledge Test Class A , Oklahoma Knowledge Test Class B ,