Rolling coal is one of the more contentious forms of automotive customization, primarily because it’s as much associated with vindictive cruelty as it is with having a good time.

In fact, there are probably more videos on YouTube of modified diesel truck owners blasting cyclists, protesters, activists, and EV drivers with sooty smoke than there are not. Over the last few years, rolling coal has become a way for many to showcase their anti-environmentalist and hard-right viewpoints. However, regardless of your politics, being on the receiving end of a diesel truck intentionally running ultra-rich is obnoxious and several states have attempted to ban the practice.

After three failed attempts, Colorado finally managed to pull it off. While earlier attempts fizzled, mainly due to concerns expressed by the Republican-controlled Senate over how regulations might affect the trucking and agriculture industries, a revised bill better addressed those concerns. Now, law enforcement will undergo training to help differentiate between a smoky work truck and those specifically designed to run rich for the purpose of rolling.

While other states — like Maryland — have tried and failed, the legislation makes Colorado only the second state to enact such a ban. New Jersey outlawed the practice in 2015, crafting a $5,000 citation, after a state assemblyman was blasted with diesel smoke in his Nissan Leaf. According to The Colorado Statesman, the state’s ban won’t be nearly that strict — just a svelte $100 penalty.

Technically, rolling coal is already a federal crime everywhere. The United States Environmental Protection Agency stated that the practice was illegal in 2014, as it violates the Clean Air Act. That law prohibits the manufacturing, installation, or sale of any part for a motor vehicle that bypasses or defeats an emission control device. Enforcing that law is, however, next to impossible. Focusing specifically on the more obvious act of rolling coal should be somewhat easier to enforce.

Senate Bill 278, sponsored in the House by Democrat JoAnn Ginal and in the Senate by Republican Don Coram, passed a final reading in the House on Tuesday by a margin of 40 to 25. It is now awaiting the governor’s signature.

[Image capture: Stancer/YouTube]