Most likely, it is fashion pure and simple. It seems that the
Japanese have certain must-have items, and others just aren't as
desirable. Just like my friend (not from Japan, but from Europe), who
asked me "Which is the best bicycle?" I hope listmembers won't see
this as an invitation to explore that never-ending topic!
IN ITALY, THE LIGHTSET TO HAVE ARE RADIUS. THEY EFFECTIVELY DO OFFER BETTER
ILLUMINATION AT LOW SPEEDS. IT IS WIDELY CLAIMED BY OLDER ITALIANS THAT TO
SEE TWO CYCLISTS WALKNG THEIR BIKES SIDE BY SIDE AT NIGHT WITH RADIUS
HEADLIGHTS GIVES THE IMPRESSION OF A CAR APPROACHING.