Are they ready to pull in each and every van that doesn't have windows? How do they differentiate between over the road vehicles and the work van owned and driven to jobs by an electrician or plumber, or the van used as a personal vehicle by someone? The way I see it, the regulations wouldn't be able to apply to the electrician or the guy using it for personal use and, knowing that, a lot of companies would simply stop putting signage on the vans. If you want to enforce log books in that scenario, you'd have to be stopping every van on the road and a lot of non commercial use vehicles would be severely inconvenienced. I guess someone could suggest that signage would be required, but then again, you can't require a guy driving a van for personal use to put signs on his van, so how do you really know which vans going down the road are freight haulers and which ones aren't. Also, how do you enforce those regulations on the former without seriously inconveniencing the latter? You'd have to require EVERY van to stop at the coops, and I don't think the general driving public would take kindly to that.