Even felt irritate by cyclists riding on the wrong side of the street? If so, the law is now on your side. If you are in the habit of riding on the right side (that is, against the traffic – the wrong side), beware! That habit might get you in trouble.
http://www.japantimes.co.jp/news/2013/09/27/national/cyclists-warned-on-new-left-side-rule/