As my colleague suggested, when looking at a truck being driven down the road, it's evident to those of us in the industry—those of us who are drivers or technically inclined—and very easy for us to highlight a truck that's not ready for the road. There are little technical terms that we look for.
I'll look for trucks with their fifth wheel positioned all the way back in the winter, rather than moving it forward so that you have better steerability on the truck. Now, granted, this means the truck is properly scaled, etc. There are a lot of factors that go into balancing weight on a truck, but it's evident to a seasoned driver, a skilled driver and a trained driver when it's not how you set up your vehicle going down the road. Furthermore, if you ask a driver if there's anything evident in their set-up that is incorrect, they won't know how to answer.