Originally Posted by
rpenmanparker
The biggest danger in sidewalk riding is getting t-boned by a car driving through an intersection on a cross street. Cars aren't looking for cyclists on the sidewalk. I have had several near misses with sidewalk cyclists, who frequently act like they are on the street and just plow through the intersection. This is especially true if you are "salmoning" on the sidewalk that corresponds to the street lanes going in the opposite direction you are riding. Cars at cross streets aren't looking to the right for bikes either in the street or on the sidewalk.
Yep. The relative speed of a bike over a pedestrian makes it all the more dangerous. It's gets worse if there are parked cars obscuring the view of the speeding cyclist. In Philly, if you ride your bike through a crosswalk you are considered a vehicle. If you dismount and walk your bike, you are considered a pedestrian with the right of way.