A cardboard box on the roadway:

Question

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.

Accepted Answer

Could contain a heavy object that could damage vehicles.

Answer

Should be expected to be on the roadway.

Answer

Is usually empty and harmless.

A cardboard box on the roadway:

Wait, before you go