The target of keeping long-term global warming within 1.5 degrees Celsius (2.7 Fahrenheit) is moving out of reach, climate experts say, with nations failing to set more ambitious goals.
Heavy duty trucks is broad, and includes semi trucks, buses, tractors, etc
I'd be curious to see those commercial vehicles broken out, and the question answered for how much impact personal transport has on us emissions
Any vehicle exceeding 26,001 pounds is considered heavy-duty. Examples include city transit buses, mobile cranes, cement mixers, refuse trucks, and tractors designed to pull refrigerated trailers, dry vans and other equipment.
There is nuance!
Heavy duty trucks is broad, and includes semi trucks, buses, tractors, etc
I'd be curious to see those commercial vehicles broken out, and the question answered for how much impact personal transport has on us emissions
https://fleetnetamerica.com/blog/post/classifying-medium-and-heavy-duty-trucks
All that info is further down that EPA link