Great story!
 It should be laminated and posted in every bike shop, store, station and cafe where newbies might read it.  And also one for runners and hikers who seem to feel bears can read "Public Park" signs. 
Somehow I doubt the bears would give a hoot about the signs though,  even if they could read them. 
"I am Bear. therefore I am the boss. Get out of my way, scrawny human!"