Maybe someday I'll come out with a project to paste the blue arrow above every seats to mock the backwardness of our country in being courteous. I have to admit I myself am guilty as charged; but every single seat, irregardless of whether or not they are reserved, really should be given up to whomever needs it more. So why the need to mark out a "reserved" seat to remind our "educated" population?! Effective as it seems, it backfired. Excuse has just been given to hog the "non-reserved" seats because well, they're not reserved!
I'm sure someday a fine will be slapped on misusers and trust me, it'll only highlight the weakness of our authoritarian governance instead of solving the problem. Education, I'd say, is the key.