• Cyclesense.net - A fun look at cycling safety, covering issues such as the importance of wearing a helmet, road rules, and maintaining your bicycle.
• National Highway Traffic Safety Administration - The NHTSA site is not solely about cycling safety and issues, but it is a very valuable resource to explore.
• Bicycling Magazine - This site features bikes, bike gear, equipment reviews, trining plans, bike maintenance how tos, and more, for cyclists of all levels.

Still looking for more information? It's never to late to use Google!