protector to avoid crashes in dioramas of trucks or parking lots Scale 1/87 H0 measures width and length 13mm high 13.5mm
I recommend using woodland scenic ballast to generate that effect of greater weight on the protector.
version with light tower
https://www.cgtrader.com/3d-print-models/hobby-diy/other/concrete-column-protector-plus-tower-with-lights-scale-h0-1-87
portable bathroom
https://www.cgtrader.com/3d-print-models/hobby-diy/other/ho-scale-portable-toilet
barrier jersey https://www.cgtrader.com/3d-print-models/miniatures/other/jersey-barrier-h0-scale-1-87-135f5149-d340-4359-8974-61224a7d5dc4