(http://www.mikeandthebike.com/) is a great bike safety website for kids. Built around the book Mike and the Bike by Michael Ward, this site has great music, potentially life-saving bike safety tips, and a format that is easy and fun for kids to understand.
If you want to help a kid in your life understand bike safety, send ‘em over to http://www.mikeandthebike.com/. (And listen in–you’ll like it!)