I can't answer to the cable's legality, and I too was surprised the first time that I saw it. But, not the second. The cable guide there is there so that prams

I can't answer to the cable's legality, and I too was surprised the first time that I saw it. But, not the second. The cable guide there is there so that prams etc can get over it without much trouble, and so that pedestrians don't trip.