A cardboard box on the roadway:

Question

Any foreign object on the road is potentially dangerous. For example, something seemingly harmless, such as a cardboard box or paper sack, could contain a hard or heavy object that could do serious damage to a vehicle.

Accepted Answer

May contain a heavy object that could damage your vehicle.

Answer

Is not a cause for concern.

Answer

Is usually empty.

Answer

Should be avoided by driving off the roadway.