Do you have a source for that information? Everything I’ve read and analyzed in my personal and professional life says transportation CO2 emissions are the largest contributor with light duty emissions being a big part of the sector.
CBO analysis shows transportation as the largest slice of the pie at 38% in 2021.
https://www.cbo.gov/system/files/2022-12/58566-co2-emissions-transportation.pdf
At a Glance The largest source of emissions of carbon dioxide (CO2, the most common greenhouse gas) in the United States is the transportation sector. Emissions from transportation surpassed emissions from the electric power sector five years ago and now constitute two-fifths of domestic...
www.cbo.gov
According to this, the light duty vehicle sector is the largest CO2 emitting portion of the transportation sector at 58%.
I would very much like to know where you got your information from.
The report you linked is listing percentages of US emissions. Globally, the transportation sector is @14% of emissions, not the 38% it is in the US. The global transportation sector includes both passenger and cargo air travel, all shipping, all railroad, all trucking, as well as public transport in busses etc. Light Duty personal use vehicles are about half of the global transport sector (versus 58% of the USA transportation sector) = 7% of total emissions. I have seen the stat of half of transportation coming from personal use cars and trucks multiple times from multiple sources, and logically it makes sense if the figure is 58% of transportation in the USA where everyone has multiple cars and drives daily.
Of emissions in the USA, light duty cars and trucks make up a bigger % of our emissions, because we drive more than the typical human on earth, and because our electricity generation is cleaner than average, due to less reliance on coal. Other reasons our emissions % from cars and trucks is higher is that we have pushed much of the high emissions manufacturing to China and other emerging markets.
Cars and trucks in the US represent around 2.8% of global emissions….almost half of the 7% global total from our 350 million people.
If you Google search global emissions, versus US emissions, you can find multiple sources for these figures, although most articles are written to support climate change action so you have to dig in them to pull actual figures. Holman Jenkins in the Wall Street Journal has written extensively on this topic, and what a sham electric vehicles are in terms of making a meaningful dent in global emissions. A quick search shows transportation at 7.6billion tons globally, out of 40.8 billion total - 18% versus the 14% I quoted, for the year 2021. Transport was obviously much lower in 2020. None of these figures are precise because they can’t be and are variable.
You can back into similar numbers from the report you linked. Total USA emissions 4.6billion, transportation sector 38% of that, cars & trucks 58% of that is just over 1 billion tons. Global emissions 40.8 billion…so cars and trucks in the USA are around 2.5% of global emissions…similar to the 2.8% I previously quoted. But the report doesn’t make it easy, because it’s written to support an agenda and defend CAFE standards.
The elephant in global emissions is electricity generation. If we were at all serious about reducing emissions, we would have a major push towards nuclear energy. Even solar and wind are less efficient than advertised when you include both the carbon footprint of building and shipping the equipment, AND dismantling and disposing/recycling after it’s useful life…windmills weigh an incredible amount, and they don’t last indefinitely. You will not dramatically reduce manmade CO2 without nuclear. But that doesn’t fit the grift, so it’s not talked about.
China and India are building coal plants as quickly as they can, and using that energy to build us crap (including solar panels). They then ship the crap they build across oceans in ships burning bunker oil, some of the worst pollutants there are. Less oil demand from us means cheaper oil for developing nations, which will increase its use there. But it sure feels warm and fuzzy to buy a Tesla.
In summary, personal use cars and trucks are around 7%of global emissions. An electric car still has a large carbon footprint in mining for minerals used in batteries, in recycling that battery at end of life, etc. Not to mention the CO2 of the electricity used. If everyone magically drove electric cars tomorrow, global CO2 emissions would be reduced by a few percent. It is an absurd place to focus resources if the goal is emissions reduction. But nuclear isn’t popular with greens. And virtue signaling feels good. So we get the grift.