I'll show you some photos.
Do you know what these like boxes are?
Actually, these boxes have bags or bottles. These bags and bottles have sand inside them.
Do you know why?
During winter, Hokkaido becomes really cold and roads become slippery by freezing.
That's why, these sand's bags and bottles are necessary for us.
We sprinkle sand on the icy road.
It's quite important to walk safety.
I found many kinds of boxes for nonslip sand.
This green one is the oldest and simple design.
These letters on surface of this box mean the address of this area.
This woody one is the newest.
It has bottles and trash box on the bottom of it.
with the sign of caution