When many people think of a motorcycle crash, they imagine a bike speeding along the highway out of control only to be upended by any number of fateful circumstances. Such accidents often result in serious injury or death. But the truth is there are many motorcyclists who obey the speed limit, don't drink and drive and wear protective gear. And unfortunately, they sometimes get hurt by the negligence of other motorists. On October 10, a 50-year-old man on his motorcycle was seriously injured in downtown Seattle, at the intersection of Third Avenue and Pike Street.