661-Pete wrote: . . . But we've moved on somewhat since those times. . . .
Ah, we certainly have! A minor A-road junction I used to regularly traverse had solar powered LED cat's eyes. Very eerie! A bit like this --> http://www.perspectivaciudadana.com/con ... emid=27732
It's a pretty notorious junction, and it seems that the main cause of incidents is drivers being confused by the layout of the road, so I suspect they do have some benefit in this particular location although there was still always a regular sprinkling of bodywork and glass.