There’s nothing cool about rolling coal, also known as coal rolling. To those unfamiliar with the practice, it entails a diesel truck spewing a thick plume of black smoke on unsuspecting cyclists, ...

MIDDLEBURG, Fla. -- A popular trend among diesel truck drivers is getting some heat from motorists and pedestrians. 'Rolling coal' is spreading on social media and truck enthusiasts say it's clouding ...

Our Colorado Wonders story on the low numbers of drivers being cited for rollin’ coal – 43 to be exact – infuriated the lawmaker who started the effort. In a story that aired and published Aug. 19, ...

Prosecutors say the ring smuggled thousands of illegal devices that let diesel-truck drivers belch hundreds of times more pollution than allowed by law The whole business went up in smoke. A group of ...

The whole business went up in smoke. A group of auto-parts dealers have been charged with operating a multimillion-dollar smuggling ring to sell banned devices that let drivers switch off the ...