Helmets required

One of the big changes since I was here in September, just 6 months ago, is that everyone wears helmets on their motor bikes. That wasn't the case then. There has been a huge campaign to warn of the problems accidents can cause - - many of the billboards were quite gruesome and provoking. Now it must have moved into law/requirement as everyone has them. Many are creatively designed with designs of animals, paw prints, designs, etc. Just another thing I've noticed...