I was wondering yesterday whether any of the studies that determined that bicycling on the road is safer than bicycling on the sidewalks, took into account the skill and biking knowledge level of the riders. I mean in the end it is no excuse to not know the proper rules and procedures for operating your vehicle whether a car or bicycle. But might not the people who are injured while riding thier bikes on the sidewalk (by weaving through peds and not being careful at driveways and crosswalks)also be the ones who would regularly run redlights and stopsigns, squeeze through long lanes of traffic, ride in the door zone, and ride the wrong direction on the street, and thus probably also get injured if they were actually on the roads? I mean if you aren't going to ride safe, you aren't going to period. But if you are riding safe and conscientiously then you are in good shape. Just a thought I had floating around during the ride home yesterday.