Instead of reflectors, why not make (partially) reflective frames?
The little white front and red tail reflectors that come with a newly bought bike are not only useless in most cases, but often take extra room and interfere with mounting lights etc. on handlebar and seat post. They are useless nuisance. Couldn't the manufacturers just make part of the bike frame reflective with reflective painting or reflective tapes (like many of us do)? What do you think?