Train for loading stones up to 40 tons for port jetties.
Simple, lightweight and inexpensive construction(low price/color Lego parts), any LEGO machine can support up to 10 carriages of this type.

Tile with number 7815 – BL 3069bpb0013 not available in Wellow.
Use BL 3069bpb078 – Tile 1×2 with groove with EXO-Code XFxxxxxx (recommended),
the problem is getting two pieces with the same code (it’s not as easy as it looks).
Of course you can use a 1×2 yellow tile and produce a sticker with number.
Remove parts for the minifig (any will do).

enjoy