I don't think fines for not wearing helmets will noticeably reduce the fatalities (despite the positive reports that will come).
Many Thais and some Foreigners don't wear a helmet; it's only resting on their head. Motorcops included. Some don't even bother fastening it correctly or any at all. Worthless in both cases - they could be sitting still on motorbike and fall over and the helmet most likely to fall off easily - worthless, kinda like that gov't education.
Not to sound harsh, but I when I read similar, someone nearly always says ‘time to get a real visa’. Maybe they already told you, I didn’t read all comments. Good luck to you.