Gwaetha’r modd, rydym i gyd wedi gweld ceir heb fathodyn wedi’u parcio yn y safleoedd Bathodynnau Glas.  Mae tystiolaeth lafar hefyd bod ffrindiau a pherthnasau’n defnyddio’r bathodynnau wrth mofyn neges neu wrth wneud cymwynas i ddeiliad bathodyn.  Nid dyna yw diben y Bathodyn Glas o gwbl.
Sadly, we have all seen cars parked in designated bays that do not have a Badge displayed. There is also anecdotal evidence that Badges are sometimes being used by friends or relatives running errands on behalf of the Badge holder. This is not what the Blue Badge scheme is for.