3 pics of the approach to the layby in question, to show how easy people could get caught - hardly gives the impression of a particularly hazardous spot, combined with the fact half the van is hidden and it is parked just as you approach the 60 zone - with no intermediate 40 zone to suggest it is still a relatively hazardous location.
Purely and simply to gain revenue, given we drove by hundreds of potentially more dangerous locations over the weekend and no sign of them being safety conscious there