I saw this broken down truck in the Mazowe valley this morning. The cans are there to warn approaching motorists that there is a hazard ahead. Now about a year ago we all had to purchase red triangles (x2) and a fire extinguisher to be carried in all vehicles at all times. Yet I still see branches and various other unique warning signs used for this purpose.
A Zimbabwean answer to the red warning triangle.
Zimbabwe Absurdity 