Every now and then, you hear a story about a semi crashing because the brakes failed. The truck went out of control and slammed into other cars or nearby buildings. You're probably very wary of this possibility if you live in Colorado, where there are specific truck crash emergency lanes leading off of the highways in the mountains. They give truckers a way to stop an out-of-control vehicle while causing as little damage as possible.
The driver next to you at the red light rests their head on the steering wheel. You can't help but think that they look exhausted. You are headed home from a late-night shift at work, after all, and you suspect that driver is as well.
One of the most common types of motorcycle crashes happens when a vehicle turns left across your path. This can happen due to a combination of factors, primarily relating to (1) the small size and lack of visibility of a motorcycle and (2) the fact that many motorists are distracted and not paying attention to traffic around them.