HD 1169 Massachusetts House · 194th Legislature (2025-2026)

An Act prohibiting the practice of coal rolling

HD 1169 prohibits "coal rolling," a practice where diesel vehicle operators deliberately emit excessive soot or smoke to obstruct visibility. The bill bans retrofitting vehicles to increase emissions and prohibits intentionally releasing large amounts of soot or smoke that blocks views of roadways, traffic devices, or other drivers. It directly affects operators of diesel-powered vehicles, such as truckers, who might engage in this hazardous behavior. Violators face fines between $100 and $1,000. The law aims to improve roadway safety by eliminating this specific hazard.
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