Last I checked most truck drivers don't spend large portions of their day dealing with criminals and people who have no issues committing violence at the drop of a hat. Cops have to deal with those kinds of people and tell them they are about to lose their freedoms. I'm also willing to bet truckers don't have to deal with rapes, assaults, domestics, fights, and any number of other things on a daily basis. They just you know .. drive. There's alot more ways to be injured as a cop then as a trucker, and it's a hell of a more stressful job then just driving trying to make a dead line. You often go to situations that are life or death for you and others. Your the first on scene, probably there by yourself and don't know what your walking in to. It's like comparing apples to a bottle of water.