Mario Freitas Apr 14, 2022:

@ Phil Of course it's a trailer. Of the lowboy type. There are several types of trailer. Flatbed is one, but it's made out of wood and has side closing. The "prancha" is made of steel and has nothing on the sides. It's called a "lowboy", although there are other names for it. But "flatbad" is generic for several types of trailers, not only the "prancha".

philgoddard Apr 13, 2022:

If Google Images is anything to go by, it looks like a trailer.