The problem is that humans are not Xerox machines and we don't read by a direct line moving ahead of us, but instead we focus on objects. If the "LANE | BIKE" sign were separated by fifty feet it would be logical, as each line would be its own distinct object, but by having them so close it actually inhibits attribution.
I think it's how they do it in America (I was watching a video of James May reviewing a cybertruck, and he commented on markings that say things like "Xing Pedestrian"). It makes a certain kind of sense, I suppose.