Actually NO IT IS NOT SAFE TO RIDE A BIKE ON A SIDEWALK. They made roads for a reason, and sidewalks yeah pretty sure there for walking on, next time i see an biker decided to be a cunt, stick in the spokes, he'll stop next time. Honestly people need to wake the fuck up, i almost ran over a police officer and 4 kids on goosey night cause he had them all standing in the middle of the road. Gave me 4 tickets, for driving on a road... they were all dropped when i completed a complaint and told the mayor how he endagered the lives of 4 minors. this study just wasted thosands of dollars i could have pulled this from my ass and it would have made just as much sense. I dunno blind people sorry, get a dog.