The sheriff's office in Denver, Colorado is asking diesel truck drivers to stop doing what they love, rolling coal.
This comes because it's pretty bad for the environment but also because cyclists have been getting blasted by the black smoke from the skoal loading, coal rolling country boys.
It's become such a problem for cyclists, one wears a camera on his helmet!
Rolling coal has been illegal in Colorado so the sheriff's department is asking people to turn in the engine-modifying maniacs!
But with those dumb, bright outfits some cyclists wear, we would probably roll coal on some too! YEE YEE!