Hey Armada - thats a pretty nice quality asset pack.
I especially like the modularity you’ve allowed in the pack.
A couple little edits on some areas will increase the quality and accuracy of these models.
Some of the areas colored - metal color are most commonly highly reflective chrome. The circled areas should resemble the same material that is applied to the tanker trailer.
On the cargo/box trailer the most common pattern/look is this type of trailer. All the reflectors, lights and markings are DOT required in order to be legal.
And on the flat bed trailer - very few trailers here in America are wooden. There are a some that have wooden slats laid into a steel frame, but most of the flat bed trailers look like this.
