Notice the guy in red? He pulled his cloth over his head before putting the helmet. Why? To avoid disappearing. LOL. That was the rumour when they started forcing Helmet on Okada riders and passengers, someone somewhere put it on his head and s/he disappeared. Some do this for other reasons - to avoid getting diseases! And that woman in yellow Gele (headgear) would rather bribe the police and break her head than protect it with Helmet.