Your thinking is correct but your wording is a bit odd.
You mentioned your country’s roads but didn’t say where you live. Your garage says Monaco; is that where you live?
Coroplast is not an exotic material. It is just corrugated plastic board and it will survive rain much better than using cardboard. A good source in the US is political election signs that you can pick up for free after voting is over. I don’t know if they have that sort of thing where you live but it shouldn’t be difficult to find for purchase.
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King for a Day, Fool for a Lifetime
Remember, democracy never lasts long.
It soon wastes, exhausts, and murders itself.
There never was a democracy yet that did not commit suicide.
- JOHN ADAMS, letter to John Taylor, April 15, 1814
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