Dead Zone?

Motorway verges in the UK cover a considerable area of unbuilt and uncultivated land which is one of the reasons why they have become ecologically important habitats for some plants and animals in spite of the obvious dangers associated with their proximity). It has now been suggested that they might provide an answer to the shortage of space in graveyards and crematoria for disposing of human bodies (https://www.theguardian.com/science/2019/jul/05/bury-bodies-along-uks-motorway-to-ease-burial-crisis-expert-suggests). This would presumably not involve the provision of grave markers as these would be a hazard for vehicles using the road. I wonder if people would be allowed to choose the location e.g. "the A48, near...…" but that might cause relatives to go to these sites. The bodies would add organic matter to the locations but this might well change the types of organisms that use the verges.